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.

[[-18, -47, -1, 30, 22], [-49, 2], [-15, -29, -50, -36]]

[-11880, 2, 1800]