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.
[[-30, -22, -20], [35, 74, -192, -67, -177, 94], [-50, -140, -106, 60, -8, -104], [-131, -106], [-160, 17, -122, 64, -64, 9]]