/* -*- coding: utf-8 -*-
 *
 * 3643.cc:  No.3643 Not a Bad Apple!! - yukicoder
 */

#include<cstdio>
#include<algorithm>

using namespace std;

/* constant */

/* typedef */

using ll = long long;

/* global variables */

/* subroutines */

/* main */

int main() {
  int tn;
  scanf("%d", &tn);

  while (tn--) {
    ll n, b;
    scanf("%lld%lld", &n, &b);

    printf("%lld\n", n / (b + 1));
  }

  return 0;
}