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.
[[-112, -117, 28, -74, 34, -55, 79], [83, -31, -81], [-107, 51, -122, -10], [-143, 82, -170, 38], [86, -117], [-5, -139]]