3 + 2 == 5 or die "Wrong value";
3 - 2 == 1 or die "Wrong value";
3 * 2 == 6 or die "Wrong value";
3 / 2 == 1.5 or die "Wrong value";
3 div 2 == 1 or die "Wrong value";
3.77 % 0.1 == 0.07 or die "Wrong value";
3 mod 2 == 1 or die "Wrong value";
3 ** 2 == 9 or die "Wrong value";
60 gcd 35 == 5 or die "Wrong value";
30 lcm 45 == 90 or die "Wrong value";