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.
[[51, -86, -2], [-153, -115], [-190, -59, -78], [-33, 86, -143], [59, 55, -84, -76], [15, 66, -73]]