#include <bits/stdc++.h>

using namespace std;
void fast_io() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
}

long long f(long long n, long long d) {
    long long per = n / (d - 1);
    long long m = n % (d - 1);
    long long res = per * (d - 1) * d / 2;
    res += m * (m + 1) / 2;
    return res;
}
int main() {
    fast_io();
    int t;
    cin >> t;
    for (; t--;) {
        long long d, a, b;
        cin >> d >> a >> b;
        if (a == 0) {
            if (b == 0) {
                cout << "0\n";
                continue;
            }
            a++;
        }
        cout << f(b, d) - f(a - 1, d) << "\n";
    }
}