#include <iostream>
using namespace std;
int main()
{
int N;
cin>>N;
for(int i=0;i<N;i++)
{
int T=0;
float A=0.0;
float B=0.0;
float C=0.0;
cin>>T>>A>>B>>C;
if(T==0)
{
A=A+B*0.059+C*0.002;
A*=5;
cout<<A<<endl;
}
else if(T==1)
{
A=A+B*0.059+C*0.002;
A*=6.58;
cout<<A<<endl;
}
else if(T==2)
{
A=A+B*0.059+C*0.002;
A*=193.2;
cout<<A<<endl;
}
}
}
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