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.
[[-141, 4], [-179, -187, -141, -14, -31, 83, -2], [3, -173, -59, -198, -189, -180], [-186, -1, -63, 18, -186]]