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, 18], [12, 36], [7, 30, 37, 10], [30, 25, -32, 8], [2, -21, 28, -1], [-40, -39, -15, -47, -9]]
Output:
[18, 432, 300, -7680, 56, -40]