function chocolatesByNumbers(int $n, int $m): int
{
    $gcd = static function (int $n, int $m) use (&$gcd) {
        if ($n % $m === 0) {
            return $m;
        }

        return $gcd($m, $n % $m);
    };

    return (($n * $m) / $gcd($n, $m)) / $m;
}