diff --git a/src/calculation_time_constrains/schema.py b/src/calculation_time_constrains/schema.py
index 3da97b6..a447f62 100644
--- a/src/calculation_time_constrains/schema.py
+++ b/src/calculation_time_constrains/schema.py
@@ -51,7 +51,7 @@ class CalculationResultsRead(CalculationTimeConstrainsBase):
     overhaul_cost: float
     procurement_cost: float
     procurement_details: Optional[Dict[str, Any]]
-    num_failures: int
+    num_failures: float
 
 
 class OptimumResult(CalculationTimeConstrainsBase):
diff --git a/src/calculation_time_constrains/service.py b/src/calculation_time_constrains/service.py
index 667d10f..065f738 100644
--- a/src/calculation_time_constrains/service.py
+++ b/src/calculation_time_constrains/service.py
@@ -1757,14 +1757,17 @@ async def get_calculation_result(db_session: DbSession, calculation_id: str):
                 }
             if not eq.is_included:
                 continue
+
             result["corrective_cost"] += float(eq.corrective_costs[i])
             result["overhaul_cost"] += float(eq.overhaul_costs[i])
             result["procurement_cost"] += float(eq.procurement_costs[i])
-            result["num_failures"] += int(eq.daily_failures[i])
-
+            result["num_failures"] += float(eq.daily_failures[i])
 
+        result["num_failures"] = result["num_failures"]/len(scope_calculation.equipment_results)
         calculation_results.append(CalculationResultsRead(**result))
 
+
+
     # Check if calculation already exist
     return CalculationTimeConstrainsRead(
         id=scope_calculation.id,