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, -137, 64, -40, -199, 77, 89], [65, -80, -36, -40, -93, -21, -6], [60, -171]]