private decimal totalGovernorAccreditationFees() { // var a = GovernorsAccreditationFees.Sum(m => m.TotalCost) ?? 0; var b = VehicleTypes.Sum(m => m.Cost) ?? 0; var c = TaxOnExcessSAGVolume.Sum(m => m.TotalCost) ?? 0; var d = TransactionFacilities.Sum(m => m.Cost) ?? 0; var e = Transactions?.Surcharge ?? 0; var f = Transactions?.Interest ?? 0; var g = Transactions?.PenaltyCost ?? 0; return(b + c + d + e + f + g); }