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.
[[56, -139], [35, -20, -157], [-61, -77, 44, 19, 45], [-63, -128], [9, 79, 13], [77, -37, -31, 36, -47, -79], [13, -69, -34, 10]]