class debt:
    def calc():
        balance = 3926
        initialBalance = balance
        annualInterestRate = 0.2
        monthlyInterestRate = annualInterestRate/12
        minimumMonthlyPayment = 10
        while (balance > 0):
            for i in range(12):
                balance = round((balance-minimumMonthlyPayment)*(1+monthlyInterestRate), 2)
            if (balance > 0):
                minimumMonthlyPayment +=10
                balance = initialBalance
        print "Lowest Payment: ", minimumMonthlyPayment
    calc()