ok when i run this program it asks questions i enter the following

house price = 1000

down payment = 50

interest rate = .05

number of payments 30

top equation: double tempTop = ((housePrice - downPayment) * (annualInterestRate/12));

bottom equation: double tempBottom = ((1-(1+(Math.pow(annualInterestRate/12, -numberofPayments)))));

double monthlyPayment = (tempTop / tempBottom);

the end results are top equation = 3.9583333333333335

end result for bottom equation = -2.548808761537613E71 negative number

mortgage payment = top/bottom = -1.5530130753887556E-71 negative number