public function expandNumber($number)
    {
        switch (strtoupper(substr($number, -1))) {
            case 'B':
                $multiplier = 1000000000;
                break;
            case 'M':
                $multiplier = 1000000;
                break;
            case 'K':
                $multiplier = 1000;
                break;
            default:
                $multiplier = 1;
        }

        return (int) intval($number) * $multiplier;
    }