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.
[[-58, -39, -17, -14, -43], [-13, -147, -55, 91, -61], [66, -81, 2, -59]]