#include<iostream>
#include<cassert>
#define rep(i,n) for(i=0;i<(int)(n);i++)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;

int t,d,a,b;

ll f(int d,int a){
    if(a<0)return 0;
    ll ans=0,base=(ll)d*(d-1)/2;
    ans+=(a/(d-1))*base;
    d=a%(d-1);
    return ans+(ll)d*(d+1)/2;
}

int main(){
    int i,j;
    scanf("%d",&t);
    while(t--){
        scanf("%d%d%d",&d,&a,&b);
        printf("%lld\n",f(d,b)-f(d,a-1));
    }
    return 0;
}