#include <iostream>
using namespace std;

int mult(int val_1, int val_2);

int main() {
    int val_1 = 6;
    int val_2 = 7;
    int m;
    m = mult(val_1, val_2);

    cout << val_1 << " × " << val_2 << " = " << m << endl;

    return 0;
}

int mult(int val_1, int val_2) {
    int rl, rh;
    __asm__ ("mulq %q3" : "=a" (rl),
             "=d" (rh) : "%0" (val_1),
             "rm" (val_2) : "cc"
             );
    return rl;
}