#include<bits/stdc++.h>
using namespace std;
using LL = long long;
using ULL = unsigned long long;
#define rep(i,n) for(int i=0; i<(n); i++)

ULL GCD(ULL a, ULL b) { return b ? GCD(b, a % b) : a; }

int main() {
	int T; cin >> T;
	while (T--) {
		ULL d, A, B; cin >> d >> A >> B; if (A != 0) A--;
		d--;
		ULL a = A % d, b = B % d;
		ULL t = B / d - A / d;
		ULL ans = 0;
		ans += t * (d * (d + 1) / 2);
		ans += b * (b + 1) / 2;
		ans -= a * (a + 1) / 2;
		cout << ans << endl;
	}
	return 0;
}