#include<bits/stdc++.h>
#define int long long
#define double long double
#define INF INT_MAX
using namespace std;
double a,b;
signed main() {
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>a>>b;
	cout<<fixed<<setprecision(10)<<b/a/(int)b;
    return 0;
}