public class test {
    private int total_wrappers, new_candy, new_wrappers = 0;
    ........
    ........
    public test() {
      new_candy = candyFromDiscount(currentCandies, m);
      new_wrappers = wrappersFromDiscount(currentCandies, m);
      total_wrappers = new_candy+new_wrappers;
      ....
    }
    ........
    ........
}

import java.util.Scanner;
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();
	
			solutionMethod(n,c,m);
		}
		
	}
	
	
	private static int initialCandy(int n, int c){
		return n/c;
	}

	private static int candyFromDiscount(int calcDiscount, int m){
		return calcDiscount/m;
	}
	
	private static int wrappersFromDiscount(int calcDiscount, int m){
		return calcDiscount%m;
	}
	private static int totalCandy(int currentCandies, int m){
		if (currentCandies < 1)	return 0;
		
		int total_wrappers = getTotalWrappers(currentCandies, m);
		
		while (canAddNewCandy(total_wrappers, m)){
			currentCandies += candyFromDiscount(total_wrappers, m);
			total_wrappers = getTotalWrappers(total_wrappers, m);
		}
		
		return currentCandies;
	}
	private static boolean canAddNewCandy(int totalWrappers, int m){
		return candyFromDiscount(totalWrappers, m) >= 1  ||  
		wrappersFromDiscount(totalWrappers, m) >= m
	} 
	private static int getTotalWrappers(int totalWrappers, int m){
		return candyFromDiscount(totalWrappers, m) + wrappersFromDiscount(totalWrappers, m);
	}
	private static void printFinal(int total){
		System.out.println(total);
	}
	private static void solutionMethod(int n, int c, int m){
		int candy = initialCandy(n, c);
		printFinal(totalCandy(candy, m));
	}
}