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.
[[-82, 30, -178, -70], [-105, -54, -116, 28], [100, -66, 90, -90, -82], [55, -69, 17, -138], [-30, -147, -114, 39, -140]]