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.
[[-27, 90], [-172, -189], [-170, -86, -32], [-85, -86, -184, -138, -118, 70], [-164, 94], [-177, -157, 26, 84, -121], [-31, -96, -176]]