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.
[[-180, -62, -81, 70, -43, 22, -191], [-12, -100, -81, -64, -134, -61, 57], [-84, 19, 91, 100, -140], [-18, 50, -7, 79, -187, -170, -200]]