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.
[[-138, -80, -89, 36, -175, -44], [-17, -125, -110, 21, -115, -155, -10], [-18, 72, -129, -38, 14, -32, -18], [-158, -92, -36]]