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: [[24, 32, -39, -22, -48], [-19, 42, 19, 50, 21], [8, -29, -3, -40, -42]]
Output:
[811008, 2100, 13440]