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.
[[-18, -91, 6, 87, 21, 100], [-49, 61, 96, -89], [26, 78, -112, 28, -164, -23, 81], [100, -144, -94, 39], [-143, -141], [-28, 8, -37, -174], [10, 50, -54, 44]]