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.
[[-12, -101, -7, 46, 65, 60], [75, -187, -156], [21, -196], [-172, -42, -137, -90, 82, -85, 10], [4, -48, -50], [-3, -132], [-54, -23, 21]]