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: [[-49, 44, 25, 18], [7, 18, -17, 16, 38], [46, 1, -17]]
Output:
[792, 10944, 46]