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.
[[-50, -44, 70, -90], [-191, 56, -90, -125, -64], [-86, -22]]