#include <iostream>

using namespace std;

int main()
{
    double aVariable, bVariable;
    cout << "Write 2 variables" << endl << "a = ";
    cin >> aVariable;
    cout << endl << "b = ";
    cin >> bVariable;
    cout << "a * b = " << aVariable * bVariable << endl << "a / b = " << aVariable / bVariable << endl << "a + b = " << aVariable + bVariable << endl << "a - b = " << aVariable - bVariable << endl;
    return 0;
}