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.
[[-94, -200, 15], [-95, -132, 94, -48], [-150, -148, 81, -28, -129, -189, -138], [-8, -18, -15, -96], [52, -67, -74], [-95, -109, -47, 29, -144, -137, -140]]