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.
[[-138, -87, -91, 9, 59, -51, -119], [5, -48], [-91, -104], [16, -108], [-51, -105, -147, -118, -129], [-69, 26, -198], [39, -128], [-88, -164, -168]]