/* -*- coding: utf-8 -*-
 *
 * 1252.cc:  No.1252 数字根D - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

/* typedef */

typedef long long ll;

/* global variables */

/* subroutines */

ll fm(int n, int d) {
  if (n <= 0) return 0;
  int k = n / (d - 1), r = n % (d - 1);
  return (ll)d * (d - 1) / 2 * k + (ll)r * (r + 1) / 2;
}

/* main */

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

  while (tn--) {
    int d, a, b;
    scanf("%d%d%d", &d, &a, &b);

    printf("%lld\n", fm(b, d) - fm(a - 1, d));
  }
  return 0;
}