diff --git a/src/masterdata/__pycache__/service.cpython-311.pyc b/src/masterdata/__pycache__/service.cpython-311.pyc
index 5860f01..047d614 100644
Binary files a/src/masterdata/__pycache__/service.cpython-311.pyc and b/src/masterdata/__pycache__/service.cpython-311.pyc differ
diff --git a/src/masterdata/service.py b/src/masterdata/service.py
index 87da8c7..4821b63 100644
--- a/src/masterdata/service.py
+++ b/src/masterdata/service.py
@@ -36,7 +36,7 @@ async def get_all(
     *, db_session: DbSession, items_per_page: int, search: str = None, common
 ) -> list[MasterData]:
     """Returns all documents."""
-    query = Select(MasterData).order_by(MasterData.description.asc())
+    query = Select(MasterData)
 
     if search:
         query = query.filter(MasterData.name.ilike(f"%{search}%"))
diff --git a/src/modules/equipment/formula.py b/src/modules/equipment/formula.py
new file mode 100644
index 0000000..849d964
--- /dev/null
+++ b/src/modules/equipment/formula.py
@@ -0,0 +1,193 @@
+"""
+Collected formulas and helpers extracted from module algorithms.
+
+This file consolidates the core mathematical/financial formulas used across:
+- `Eac.py` (NPV, PMT, discounted projections, EAC calculation)
+- `insert_actual_data.py` (aggregation formulas, man-hour conversion)
+- `Prediksi.py` (future value / fv wrappers)
+
+Keep these functions pure and well-documented to make debugging and
+comparisons easier.
+"""
+from typing import Iterable, List, Sequence
+import math
+import numpy as np
+try:
+    import numpy_financial as npf
+except Exception:  # numpy_financial may not be installed in all envs
+    npf = None
+
+
+def npv_from_cash_flows(cash_flows: Sequence[float], rate: float, offset: int = 0) -> float:
+    """Compute discounted sum (NPV) of `cash_flows` at `rate` with optional time offset.
+
+    Formula used in `Eac.py`:
+        NPV = Σ [Ct / (1 + r)^(offset + t)]
+    where t is 1-based index of flows in `cash_flows`.
+
+    Args:
+        cash_flows: sequence of cash flows (Ct) for consecutive periods.
+        rate: periodic discount/inflation rate (e.g., 0.05 for 5%).
+        offset: integer number of periods to offset (e.g., last_seq from actuals).
+
+    Returns:
+        Discounted present value as float.
+    """
+    if not cash_flows:
+        return 0.0
+    total = 0.0
+    for i, value in enumerate(cash_flows):
+        exp = offset + i + 1
+        total += float(value) / ((1.0 + rate) ** exp)
+    return float(total)
+
+
+def pmt_formula(rate: float, nper: int, pv: float) -> float:
+    """Compute level payment PMT for given rate, periods and present value.
+
+    Uses the standard annuity payment formula (same as numpy_financial.pmt but
+    returned value uses same sign-convention as mathematical formula):
+
+        PMT = PV * [r (1+r)^n] / [(1+r)^n - 1]
+
+    Special-case when rate == 0 (equal division): PMT = PV / nper
+
+    Note: many code places use sign flips (e.g. `-npf.pmt(...)`) because of
+    numpy_financial's cashflow sign policy. Use whichever sign convention your
+    caller expects.
+
+    Args:
+        rate: periodic rate (decimal)
+        nper: number of periods (int)
+        pv: present value to amortize
+
+    Returns:
+        payment per period (float)
+    """
+    if nper == 0:
+        raise ValueError("nper must be > 0")
+    if abs(rate) < 1e-12:
+        return float(pv) / float(nper)
+    r = float(rate)
+    n = int(nper)
+    numerator = pv * r * ((1 + r) ** n)
+    denominator = ((1 + r) ** n) - 1
+    return float(numerator / denominator)
+
+
+def pmt(rate: float, nper: int, pv: float) -> float:
+    """Wrapper to compute PMT using `numpy_financial` when available, else fall back to formula.
+
+    Returns the value that `numpy_financial.pmt` would return (i.e. typically
+    negative for positive PV by that library's sign convention). The caller
+    can negate the result to get a positive payment if desired (as seen in
+    `Eac.py` where they do `-npf.pmt(...)`).
+    """
+    if npf is not None:
+        return float(npf.pmt(rate, nper, pv))
+    # numpy_financial returns payments with sign convention; our fallback
+    # returns payment with the same absolute magnitude but as negative (to
+    # match npf behavior for positive PV) so callers that negate will get the
+    # same sign semantics.
+    res = pmt_formula(rate, nper, pv)
+    return -res
+
+
+def fv(rate: float, nper: int, pmt: float, pv: float) -> float:
+    """Future value wrapper to `numpy_financial.fv` when available.
+
+    Used in `Prediksi.py` as `npf.fv(rate, nper + i, pmt, pv)` to compute
+    forecasting values.
+    """
+    if npf is not None:
+        return float(npf.fv(rate, nper, pmt, pv))
+    # fallback: compute iteratively
+    r = float(rate)
+    n = int(nper)
+    fv_val = -pv
+    # apply periods
+    for _ in range(n):
+        fv_val = fv_val * (1 + r) + (-pmt)
+    return float(fv_val)
+
+
+def discounted_projection_sum(values: Sequence[float], inflation_rate: float, last_seq: int = 0) -> float:
+    """Discount a sequence of projected `values` using `inflation_rate` with an initial offset `last_seq`.
+
+    This mirrors the calculation in `Eac.py` where projected flows are discounted
+    starting at `last_seq + 1`.
+    """
+    return npv_from_cash_flows(values, inflation_rate, offset=last_seq)
+
+
+def rc_labor_cost(interval: float, labor_time: float, labor_human: float, man_hour_rate: float) -> float:
+    """Compute labor cost for corrective/pm/oh rows.
+
+    Formula from `Prediksi.py` / `insert_actual_data.py`:
+        rc_xxx_labor_cost = (interval * labor_time * labor_human * man_hour_rate)
+    """
+    return float(interval) * float(labor_time) * float(labor_human) * float(man_hour_rate)
+
+
+def rc_lost_cost(raw_loss_output_mw: float, raw_loss_output_price: float, cm_interval: float) -> float:
+    """Compute lost production cost as in `Prediksi.py`.
+
+    Formula used:
+        rc_lost_cost = (raw_loss_output_MW * raw_loss_output_price * raw_cm_interval) * 1000
+    The multiplication by 1000 appears in source and is preserved here.
+    """
+    return float(raw_loss_output_mw) * float(raw_loss_output_price) * float(cm_interval) * 1000.0
+
+
+def rc_total_cost(**components) -> float:
+    """Sum all provided components into a total RC cost.
+
+    The `Eac.py` / `Prediksi.py` code builds a `rc_total_cost` as the sum of many
+    parts; this helper simply sums values passed as keyword args (coalescing
+    None to 0.0) to make testing/comparison easier.
+    """
+    total = 0.0
+    for k, v in components.items():
+        try:
+            total += 0.0 if v is None else float(v)
+        except Exception:
+            # ignore non-numeric components
+            continue
+    return float(total)
+
+
+def seconds_to_hours(seconds: float, ndigits: int = 2) -> float:
+    """Convert seconds to hours and round to `ndigits` decimals.
+
+    This mirrors usage like:
+        ROUND(SUM(EXTRACT(EPOCH FROM (actfinish - actstart)) / 3600), 2)
+    in SQL queries seen in `insert_actual_data.py`.
+    """
+    hours = float(seconds) / 3600.0
+    return float(round(hours, ndigits))
+
+
+def man_count_from_labtrans(count: int) -> int:
+    """Return man_count as per SQL CASE: if count == 0 -> 3 else count.
+
+    Implemented to match the SQL "CASE WHEN COUNT(b.laborcode) = 0 THEN 3 ELSE COUNT(b.laborcode)".
+    """
+    try:
+        c = int(count)
+    except Exception:
+        c = 0
+    return 3 if c == 0 else c
+
+
+__all__ = [
+    "npv_from_cash_flows",
+    "pmt_formula",
+    "pmt",
+    "fv",
+    "discounted_projection_sum",
+    "rc_labor_cost",
+    "rc_lost_cost",
+    "rc_total_cost",
+    "seconds_to_hours",
+    "man_count_from_labtrans",
+]
diff --git a/src/plant_transaction_data/__pycache__/service.cpython-311.pyc b/src/plant_transaction_data/__pycache__/service.cpython-311.pyc
index 3c5ab9d..d032b24 100644
Binary files a/src/plant_transaction_data/__pycache__/service.cpython-311.pyc and b/src/plant_transaction_data/__pycache__/service.cpython-311.pyc differ
diff --git a/src/plant_transaction_data/service.py b/src/plant_transaction_data/service.py
index 29f5717..f811a09 100644
--- a/src/plant_transaction_data/service.py
+++ b/src/plant_transaction_data/service.py
@@ -4,8 +4,8 @@ import logging
 from subprocess import PIPE
 
 from sqlalchemy import Select, Delete, cast, String
-from .model import PlantTransactionData
-from .schema import PlantTransactionDataCreate, PlantTransactionDataUpdate
+from src.plant_transaction_data.model import PlantTransactionData
+from src.plant_transaction_data.schema import PlantTransactionDataCreate, PlantTransactionDataUpdate
 from src.database.service import search_filter_sort_paginate
 from typing import Optional
 
@@ -67,12 +67,12 @@ async def get_charts(
 
     for idx, item in enumerate(chart_data):
         total_cost = (
-            item.chart_capex_annualized
-            + item.chart_oem_annualized
-            + item.chart_fuel_cost_annualized
-            + item.cost_disposal_cost
+            float(item.chart_capex_annualized)
+            + float(item.chart_oem_annualized)
+            + float(item.chart_fuel_cost_annualized)
+            + float(item.cost_disposal_cost)
         )
-        revenue = item.chart_revenue_annualized
+        revenue = float(item.chart_revenue_annualized)
 
         if previous_total_cost is not None and previous_revenue is not None:
             prev_diff = previous_total_cost - previous_revenue