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.
[[-9, 72, 44, 31, 90, -181, -131], [49, -64, 81, 19, -106], [-97, -12], [20, -155, -108], [-63, -60, -3, -175], [76, -68, -58], [29, -91, -67, -91, 13, 69, -21], [-138, 24, 52, 6]]