#include <bits/stdc++.h>
using namespace std;

string doit(){
    
    cout<<setprecision(15)<<fixed;
    
    // found by some calculation
    double val = 4444/21;
    
    // want to return it as string
    string ans = to_string(val);
    
    return ans;
}

int main() {
    
    string ans = doit();
    cout<<ans;
	return 0;
}