NSDecimalNumber dividing crash

[zhangxiangguang]

    var decimalNumber = NSDecimalNumber.decimalNumberWithString('12345678');
    console.log('log --> ' + decimalNumber); //log --> 12345678

    var dividingNumber = NSDecimalNumber.decimalNumberWithString('100');
    console.log('log --> ' + dividingNumber); //log --> 100

    //crash
    var number = decimalNumber.decimalNumberByDividingBy(dividingNumber);
    console.log('log --> ' + number);