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.
[[-58, -112, -164, -64, -149], [39, -144, -14, 49, -92], [-140, 39]]