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()
}

struct Num {
    top: Option<String>,
    nums: Vec<char>,
}

impl Num {
    pub fn to_string(self) -> String {
        let tail: String = self.nums.into_iter().collect();
        self.top.unwrap() + "." + tail.as_ref()
    }
}

fn div(ans: &mut Num, left: u32, divn: u32, countdown: u32) {
    let top = left / divn;
    let rest = left % divn;
    if ans.top.is_none() {
        ans.top = Some(top.to_string());
    } else {
        ans.nums.push(std::char::from_digit(top, 10).unwrap());
    }
    if countdown == 0 {
        if ans.nums.len() < 50 {
            for _ in ans.nums.len()..50 {
                ans.nums.push('0');
            }
        }
        return;
    }
    if rest > 0 {
        div(ans, rest * 10, divn, countdown - 1);
    } else {
        if ans.nums.len() < 50 {
            for _ in ans.nums.len()..50 {
                ans.nums.push('0');
            }
        }
    }
}

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

    let mut ans = Num {top: None, nums: vec![]};
    div(&mut ans, input[0], input[1], 50);
    let result = ans.to_string();

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