#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int T;
    cin >> T;
    while(T--){
        ll D, A, B, L, R, ans = 0;
        cin >> D >> A >> B;
        D--, A--;
        L = (A + D - 1) / D, R = B / D;
        if(L < R) ans += (R - L) * D * (D + 1) / 2;
        A %= D, B %= D;
        if(A == 0) A = D;
        if(L <= R){
            ans += D * (D + 1) / 2 - A * (A + 1) / 2;
            ans += B * (B + 1) / 2;
        }else{
            ans += B * (B + 1) / 2 - A * (A + 1) / 2;
        }
        cout << ans << '\n';
    }
}