If the product of two six-digit numbers \overline{27A124} and \overline{8137B4} can be divisible by 99, what is the maximum value of \overline{AB}?
如果两个六位数\overline{27A124}、\overline{8137B4}的乘积能够被99整除，那么\overline{AB}最大是多少．
<result>84</result>