incorrect output for set input

Question

So I almost have this code correct but it's not giving me the correct output for some reason and I can't figure out why. This is what I have:

package edu.ilsu;

import java.util.Scanner;
/**
 * @author Nick
 */
public class Seconds {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int hours, minutes, number_of_seconds, seconds;
        System.out.print("50391");
        number_of_seconds = in.nextInt();
        hours=number_of_seconds-number_of_seconds%3600;
        seconds=number_of_seconds%60;
        minutes=(number_of_seconds-hours-seconds)/60;
        hours=hours/3600;
        System.out.println("hours: " + hours);
        System.out.println("minutes: " + minutes);
        System.out.println("seconds: " + seconds);

    }

}

That is what I have so far but I need the output to be

Enter number of seconds: 50391
Hours: 13
Minutes: 59
Seconds 51

Answer 1

Go through each step by hand (or even use System.out.printlns/logging at each step. I am not ashamed to say I do this a decade+ after learning coding)

hours = number_of_seconds - number_of_seconds%3600;

Evaluates to:

46800 = 50391 - 3591

The intended logic would in fact be

//pseudocode, may have to floor or whatnot, but this should get you in right direction
hours = number_of_seconds/3600;
number_of_seconds -= hours*3600;