fn read_vec<T: std::str::FromStr>() -> Vec<T> {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}

fn div(ans: &mut Vec<char>, left: u32, divn: u32, countdown: u32) {
    let top = left / divn;
    let rest = left % divn;
    if top < 10 {
        ans.push(std::char::from_digit(top, 10).unwrap());
    } else {
        for c in top.to_string().chars() {
            ans.push(c);
        }
    }
    if countdown == 0 {
        if ans.len() < 51 {
            for _ in ans.len()..51 {
                ans.push('0');
            }
        }
        return;
    }
    if rest > 0 {
        div(ans, rest * 10, divn, countdown - 1);
    } else {
        if ans.len() < 51 {
            for _ in ans.len()..51 {
                ans.push('0');
            }
        }
    }
}

fn main() {
    let input: Vec<u32> = read_vec();

    let mut ans = vec![];
    div(&mut ans, input[0], input[1], 50);
    ans.insert(ans.len() - 50, '.');
    let result: String = ans.into_iter().collect();

    println!("{}", result);
}