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 updatedQuota = basicQuota + _onlinePaymentService.Interest(basicQuota, i);
double fullQuota = updatedQuota + _onlinePaymentService.PaymentFree(updatedQuota);
contract.AddInstallments(new Installment(date, fullQuota));
}
}