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.
[[73, -87], [5, -57], [-34, 40, 29, -42, 32, 14], [-162, 21, -128], [-143, -94, -135, 60, -102, -121]]