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.
[[-99, -4, -138, -76, -95, -72], [23, -140, -88, 96, 74], [15, 94, 75, -97, 46, -180]]