当我们遇到两个很大的数，而且，我们的计算机已的数据类型无法精确表示其值的时候，我就无法进行大数的乘法，为此，发表此文章-When we are faced with a great number two, but our computer has the data type that its value can not be precise, I will not be able to carry out the multiplication of large numbers, for whic