#include<iostream>
#include<iomanip>
using namespace std;

class Journey{
    public:
    static double car(double d,double s)
    {return (d/s)*1.10; }
     static double bike(double d,double s)
    {return (d/s)*1.20; }
     static double train(double d,double s)
    {return (d/s)*1.05; }
};
int main(){
    string t; double d,s;
    cin>>t>>d>>s;
    
    if(t!="Car" && t!="Bike" && t!="Trein")
    {cout<<"Invalid input";return 0;}
    
    double ans;
    if(t=="Car") ans=Journey::car(d,s);
    else if(t=="Bike")
    ans=Journey::bike(d,s);
    else ans=Journey::trein(d,s)
    
    cout<<fixed<<setprecision(2)<<ans;
}