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.
[[-21, -20], [-119, -20, -142, -122, -16], [73, -143, 83], [-50, -18, -169], [86, -139, -104, -172, -108, 32, 89], [-97, 33, 25, -148, 20, 10, -15], [-97, -64, 91], [9, -96, -130]]