Math: exp(double a)
public class Main { public static void main(String args[]) { double loanAmount = 0; double top = 2 * 5 / 1200; double bot = 1 - Math.exp(5 * (-12) * Math.log(1 + 7 / 1200)); System.out.println(loanAmount); System.out.println(top); System.out.println(bot); } }