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.
[[-147, -139], [30, -72], [80, 31, 49, -103, -175, -114, 88], [31, 70, 48, -40, 34, 78], [-129, -107, 46, -54, -187], [-71, -44, 28, 74, -50, 13], [-6, 77]]