fn read() -> Vec<(i64, i64)> {
    let mut s = String::new();
    use std::io::Read;
    std::io::stdin().read_to_string(&mut s).unwrap();
    let mut it = s.trim().split_whitespace();
    let mut next = || it.next().unwrap().parse::<i64>().unwrap();
    let n = next();
    (0..n)
        .map(|_| {
            let x = next();
            let y = next();
            (x, y)
        })
        .collect()
}

fn main() {
    let mut p = read();
    p.sort_by_key(|p| (p.1, p.0));
    const MOD: i64 = 1_000_000_007;
    let mut ans = 0;
    for i in 0..(p.len() - 2) {
        let s = p[i];
        let mut p = p[(i + 1)..]
            .iter()
            .map(|p| (p.0 - s.0, p.1 - s.1))
            .collect::<Vec<_>>();
        p.sort_by(|a, b| (a.0 * b.1).cmp(&(a.1 * b.0)));
        let mut a = 0;
        let mut b = 0;
        for &(x, y) in p.iter() {
            ans = (ans + b * x - a * y) % MOD;
            a += x;
            b += y;
        }
    }
    println!("{}", ans);
}