#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define FOR(I,A,B) for(int I = int(A); I < int(B); ++I)
#define FORR(I,A,B) for(ll I = ll((B)-1); I >= ll(A); --I)
const ll MOD=1000000007LL;
#define out(a) cout<<fixed<<setprecision((a))
ll gcd_(ll a,ll b){if(a%b==0)return b;return gcd_(b,a%b);}
ll lcm_(ll a,ll b){ll c=gcd_(a,b);return ((a/c)*b);}

pair<ll,ll> f(ll A,ll d){
	if(A<0)return {0,0};
	ll x = (A/(d-1));
	ll res = d * (d-1) / 2 * x;
	x *= (d-1);
	return {res,(A-x+1)*(A-x) / 2};
}

int main(){

	ll T;
	cin >> T;
	FORR(t,0,T){
		ll d,A,B;
		cin >> d >> A >> B;
		ll ans=0;
		auto b = f(B,d),a = f(A-1,d);
		ans = b.first - a.first - a.second + b.second;
		cout << ans << endl;
	}

}