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.
[[-146, -120], [-98, 64], [4, -171, 74, -88, -132, -50], [-13, -53, -180, -23], [4, -100, -157, 46], [-148, 49, 69], [-57, -169, -42, 73]]