I don't understand why the solution doesn't return increased number
package pl.codegym.task.task03.task0304;
/*
Zadanie z procentami
*/
public class Solution {
public static double dodajDziesiecProcent(int i) {
return i + (i*10/100);
}
public static void main(String[] args) {
System.out.println(dodajDziesiecProcent(9));
}
}