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.
[[40, 18], [-138, 36, 45], [35, -145, 53, -47, 80], [35, -52, 51], [-57, -30, -91, -183], [-148, 15, -180, -145, 9, 34, -73]]