public static double GetTotalCost(int months, DistributionByAccountTypeDTO capitalCosts)
        {
            var    endOfSpendMonth     = (FormulaBase.FindEndOfSpendMonth(months, capitalCosts) ?? 0) + 1;
            var    spendByMonth        = FormulaBase.GetSpendForAccountType(months, capitalCosts, CustomerConstants.CAPEXAccount);
            double totalInvestmentCost = 0;

            if (spendByMonth == null)
            {
                return(0);
            }
            for (int i = 0; i < months; i++)
            {
                totalInvestmentCost += (spendByMonth[i] ?? 0);
            }
            return(totalInvestmentCost);
        }