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.
[[84, 38, -176, 20, -108, -109, -153], [-136, 58, -7, -73], [-172, 58, -104]]