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.
[[73, -161, -39, -67], [-60, -44], [15, 96, 80, -156, 98, 17], [-23, 13, 80, -164, 90, -141, -128]]