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.

[[-39, 4, -10, -25, 12], [26, 43, 28, 45], [4, 14, -7], [35, -11, -49], [-10, -27, 26, 36, 50]]
[-480, 728, 56, 0, -468000]