Why out put as 0.0 ?

public class TenPerIncrease {
    public static double addTenPercent(int i) {
        //write your code here
        double incInPer = (10/100)*i;
        return incInPer;
    }

    public static void main(String[] args) {
        System.out.println(addTenPercent(9));
    }
}