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.
[[64, 2, -175, -88], [38, -168, 54], [7, -138, -75, 81, -181], [-172, -66, 69, 68, -103], [75, -91, -70]]