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.
[[-70, -116, -141, 89], [-23, -103, 85, -169], [97, -67, -141], [-45, -71, -145, -159, 68], [-13, -135, -111, -125], [2, -8], [-147, -98, 55, -70], [54, -20], [-21, 22]]