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.
[[77, -180, -147], [-183, 27], [-178, -39, -138, -43, -89, 0], [65, 17, 61]]