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.
[[-118, 72, -128], [20, -100], [-183, 9, -166, 4, -10, 30], [-116, -131, -17, -31, -142, 75], [-177, 63, -74, -174, -127, 4]]