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.
[[-32, -135, -70], [90, 64, -73, -147, 15], [68, -192, -117, 73, -169, -17, -9]]