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.
[[50, 72, -83], [-9, 47, -177, -156, -171], [-200, -23], [-99, -2, -193, -137], [-72, -62], [-159, 21, -157, 17, 34, 4, -108]]