#![allow(unused_imports)]
use std::cmp::*;
use std::collections::*;
use std::io::Write;
use std::ops::Bound::*;

#[allow(unused_macros)]
macro_rules! debug {
    ($($e:expr),*) => {
        #[cfg(debug_assertions)]
        $({
            let (e, mut err) = (stringify!($e), std::io::stderr());
            writeln!(err, "{} = {:?}", e, $e).unwrap()
        })*
    };
}

fn sum_a(a: i64) -> i64 {
    a * (a + 1) / 2
}

fn main() {
    let t = read::<usize>();
    for _ in 0..t {
        let v = read_vec::<i64>();
        let (d, mut a, mut b) = (v[0], v[1], v[2]);
        if b == 0 {
            println!("{}", 0);
            continue;
        }
        if a == 0 {
            a += 1;
        }
        a -= 1;

        let cycle_sum = d * (d - 1) / 2;
        let mut ans = b / (d - 1) * cycle_sum;
        b %= d - 1;
        ans -= a / (d - 1) * cycle_sum;
        a %= d - 1;
        ans += sum_a(b);
        ans -= sum_a(a);
        println!("{}", ans);
    }
}

fn read<T: std::str::FromStr>() -> T {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim().parse().ok().unwrap()
}

fn read_vec<T: std::str::FromStr>() -> Vec<T> {
    read::<String>()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}