1.5

#include <iostream>
using namespace std;
int y, x;
double e, a;

int main() {
    cout << "X Y"<<endl;
    cin>>x>>y;
    e = 2,7;
    a = (e*x)*((y*2+12*x*y-3*x*2)/(18*y - 1));
    cout << a;
}