说明：  这是一个分治法应用的又一个例子,利用分治技术,做大整数乘法,尤其是几百位数以上的乘法,比一般的方法快很多,仅次于快速傅立叶变换.
(This is a partition of the application also an example of the use of the partition, bigger integer multiplication, especially above the median of hundreds of multiplication, than the much faster after the Fast Fourier Transform.)