#include <bits/stdc++.h>
#define yy return 0;
using namespace std;
double a,b;
int main(){
	cin>>a>>b;cout<<fixed<<setprecision(3)<<b/a*100<<"%"<<endl;yy
}

#include <bits/stdc++.h>
using namespace std;
double a,b,c;
int main()
{
	cin>>a>>b;
	c=b/a*100;
	cout<<fixed<<setprecision(3)<<c<<"%"<<endl;
    return 0;
}