#include <stdio.h>
#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 2000000001

long long sum(long long x){
	return x * (x+1) / 2;
}

long long get(long long x,long long d){
	long long ret = sum(d-1);
	ret *= x/(d-1);
	ret += sum(x%(d-1));
	
	return ret;
}

int main(){	

	int T;
	cin>>T;
	
	rep(_,T){
		long long d,A,B;
		cin>>d>>A>>B;
		
		long long ans = get(B,d);
		if(A!=0)ans -= get(A-1,d);
		
		cout<<ans<<endl;
	}

    return 0;
}