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.
[[-34, -26, -152, 39, 66, 15], [-27, -141, -64, 73, 27], [-51, 55, 90, 5, 9]]