Instructions: 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.
Input: [[-21, -31, -9, -9], [19, -12, 29, 12, 44], [-25, 27, -17, -39]]
Output:
[0, -6336, 0]