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.
[[-97, -139, -189, -31, -88, 82], [-145, 69, -90, 93, -181, -93], [-27, 65, -76], [-144, 47]]