use std::io::*;

fn f(x: usize, n: usize) -> usize {
    x * 10 % n
}

fn cycle(n: usize) -> usize {
    let mut power = 1;
    let mut len = 1;
    let mut slow = 10;
    let mut fast = f(10, n);
    while slow != fast {
        if power == len {
            slow = fast;
            power *= 2;
            len = 0;
        }
        fast = f(fast, n);
        len += 1;
    }
    len
}

fn main() {
    let mut s: String = String::new();
    std::io::stdin().read_to_string(&mut s).ok();
    let mut itr = s.trim().split_whitespace();
    let t: usize = itr.next().unwrap().parse().unwrap();
    for _ in 0..t {
        let n: usize = itr.next().unwrap().parse().unwrap();
        let mut m = n;
        while m % 2 == 0 {
            m /= 2;
        }
        while m % 5 == 0 {
            m /= 5;
        }
        if m == 1 {
            println!("1");
            continue;
        }
        println!("{}", cycle(n));
    }
}