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.
[[-2, -59, -139, -19, -120], [-148, 59, 73, -148, 27], [94, -73, -135, 45, -75, 23], [81, -132, 2, -132, 49]]