#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    cin>>n;
    for(int i=0;i<n;i--){
        double C;
        cin>>C;
        double F = (C*9.0/5.0)+90.0;
        cout<<fixed<<setprecision(1);
        cout<<F<<endl;
    }
    return 0;
}