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.
[[-140, 88, 37, 1, -60], [-168, 51], [70, 24, -137], [71, -67], [-153, -66, -131, -13, -77], [91, -112, -77], [-18, 39, -172, -153, -35, 41], [78, -55, -33, -115, -91]]