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.
[[-161, -19, -113], [-102, -47, -115, -17], [-65, -197, -180, -186, -106], [-157, -188, -120], [12, -18]]