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.
Example: [[7, -3, -3, 11], [-6, -6, -5, 2], [-8, 4, -3]]
Example solution: [0, 72, -32]
Example explanation: The first inner list has no even integers, so the first number in the output is 0. The second list has -6, -6, 2 for even integers so the second output is 72. The third list has -8, 4 as even numbers so the third output is -32. This is a good example.

Problem: [[-29, 40, -50], [-42, 18, 10, -13, -38], [9, 12, 33, -15, 19], [17, 10], [-25, -19, 28, 30], [20, -10], [-31, 23, 7, 2, 17], [26, -13, -12, -50]]

Solution: [-2000, 287280, 12, 10, 840, -200, 2, 15600]