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.
[[60, 65, -1, -10, -57, -18], [-39, -117, 44], [-143, -180, -170, -18, -161, 41, -55]]