#include<bits/stdc++.h>
#define yy return 0;
using namespace std;
double a,b;
int main(){
	cin>>a>>b;cout<<fixed<<setprecision(9)<<a/b;yy
}

https://hydro.ac/p/ccf-AHOI2007B/solution

#include<bits/stdc++.h> using namespace std; int main() { double a,b; cin>>a>>b; cout<<fixed<<setprecision(9)<<a/b<<endl; return 0; }

#include<bits/stdc++.h>
using namespace std;
double a,b,c;
int main(){
	cin>>a>>b;
	c=a/b;
	cout<<fixed<<setprecision(9)<<c;
	return 0;
}