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.
[[-21, -117, 34], [-98, -30], [-138, 37, -165], [31, 55, -180, -96], [-5, 85, -58], [-180, 61]]