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.
[[-75, -44, -44, -163], [88, -118, -109, -31], [26, 25], [50, -180, 19], [-71, -109, -53], [-104, -95], [-22, -70, -196, -20], [-23, -21, -140]]