protected function liquidDownsize($input = 0, $format = 0)
    {
        $format = (int) $this->validUnit(7, $format);

        if ($this->input == 'si') {
            $div = [1, 10, 100, 1000, 10000, 100000, 100000, 100000];
        } else {
            $div = [1, 7680, 61440, 245760, 983040, 1966080, 7864320, 330301440];
        }

        return (float) $input * $div[$format];
    }