public void processContract(Contract contract, int months)
        {
            double basicQuota = contract.TotalValue / months;

            for (int i = 1; i <= months; i++)
            {
                DateTime date        = contract.Date.AddMonths(i);
                double   updateQuota = basicQuota + _onlinePaymentService.Interest(basicQuota, i);
                double   fullQuota   = updateQuota + _onlinePaymentService.PaymentFee(updateQuota);
                contract.AddInstallmente(new Installment(date, fullQuota));
            }
        }