I tried again :-)

import java.io.; import java.util.; import java.text.; import java.math.; import java.util.regex.*;

public class Solution {

public static void main(String[] args) {
    Scanner in = new Scanner(System.in);
    int t = in.nextInt();
    for(int a0 = 0; a0 < t; a0++){
        int n = in.nextInt();
        int c = in.nextInt();
        int m = in.nextInt();
        int chocs = n/c;  //chocolates bought with Money
        int wrapper = chocs; //wrappers from chocolate
        int ex_chocs = wrapper/m; //chocolates from wrappers
        while(wrapper>=m){
            ex_chocs = ex_chocs+(wrapper/m + wrapper%m)/m;
            wrapper = wrapper/m;
        }
        System.out.println(chocs+ex_chocs);

    }
}

}