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.
[[-99, -82, -121, 86, -129, -171], [-30, 36, 32, -186, -167, 86], [-166, 47, -142, 98, -30, -86], [-38, -74]]