import java.util.*;
import java.lang.Math;

public class Lab6c
{
   public static void main(String[]args)
        {
            System.out.print("Enter the interest rate (As a percent): ");
            Scanner scan = new Scanner(System.in);
            double r = scan.nextDouble();
            r /= 100;

            System.out.print("Now enter the principal amount: ");
            double p = scan.nextDouble();

            System.out.print("How many years is this loan for: ");
            int n = scan.nextInt();
            n *= 12;

            double monthly_payment = (p * r * Math.pow(1+r, n)) / (Math.pow(r+1, n)-1);

            System.out.println("Your monthly payment is: " + monthly_payment + "$");
        }
}