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.
[[-138, 20, 9, -133, -166, -153], [-71, -103], [-144, 9, -15, 2, -17, -172, -139], [97, -35, 16], [-77, -46, 46, -41, -12], [-166, -84, -193, 17, 12, -142], [-76, 90, -186]]