In this task, you are given a list. This list contains many lists of integers. The list is several items written within a []. Your task is to find the maximum number among the members of each inner list. The output should be a list comprised of the maximums with the same order as the internal lists.
[[-131, -158, -162, 31, -53, 41], [-146, -7], [85, -181, 72, -13, 64, -20, -63], [-162, 56, -100]]