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.
[[-31, -67, -146, -164], [12, 52, -190, -67, 34], [-44, -52, -106], [-145, 71, -37, 67, 83, 63, -132], [-117, -73, -124, -171, -64, -183], [-56, 70], [28, -153, -131, -140, 3, -104], [-71, -20, -123]]