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.
[[-18, -78, 36, -20, -155, -88, 75], [-147, -79, -129, 20, -98], [-10, -154, -49], [44, -167, -178, -25, 45, -37], [-76, 9, -31]]