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: [[42, 48, -3], [44, 29], [-7, 50, 47, 42, -14]]
Output:
[2016, 44, -29400]