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.
[[-54, -111, -145, -186, -81, -183], [-22, 38, -128], [38, -48, -112], [-104, 4, -162], [-42, -89, -38], [-51, 92], [-74, 55, -154, -160, -31], [-55, 29, -181, -179, -184, -31, -87]]