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

long long t,d,a,b;

long long f(long long x,long long y){
	if(x<=0)return 0;
	
	long long rim=x%(y-1);
	
	return (x/(y-1))*((y*(y-1))/2)+(rim*(rim+1))/2;
}

int main(){

	ios::sync_with_stdio(false);
	cin.tie(0);

	cin>>t;

	while(t--){
		cin>>d>>a>>b;
		cout<<f(b,d)-f(a-1,d)<<"\n";
	}

	return 0;
}