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.
[[67, -136, -140, 12, -43, 6, -199], [51, 7, 45, -27, 84, 13, 89]]