A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 99.

• 找出两个三位数相乘的结果中最大的回文。请注意，是两个三位整数相乘得到的数，而不是小于等于999*999大于等于100*100的数.