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.
[[-20, -138, -42, -164, 37], [71, -67, -121, -184, -191], [-117, -156, -195]]