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.
[[3, -156, -17, 3, -86, -85, -154], [-117, 67, 2, -85, -68, -141], [-159, -121, -193, -5, 57], [-139, -92], [36, -51, -111, 46, -111, 20]]