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.
[[-165, -22, -69, -116, 58], [-75, 34, -97], [-19, 69, 81, -172, 87]]