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.
[[-42, -97], [-188, -8, 85, 37, -83, -185, -116], [-140, -158, 54, -117]]