Given the task definition and input, reply with output. In this task you will be given a list, of lists, of integers. For every inner list contained in the input list, you should multiply every even number in that list. The output should be a list of integers with the same length as the number of lists in the input list. If there are no even numbers in an inner list you should output 0 for that list.

[[-50, 41, 12, 41], [-24, 6], [-16, -13], [-41, -30, 40]]

[-600, -144, -16, -1200]