#include <iostream>
int main(void)
using namespace std;
{
    cout << "15.0 plus 2.0 equals " << (15.0 + 2.0) << endl
         << "15.0 minus 2.0 equals " << (15.0 - 2.0) << endl
         << "15.0 times 2.0 equals " << (15.0 * 2.0) << endl
         << "15.0 divided by 2.0 equals " << (15.0 / 2.0) << endl;
        
    return 0;
}