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: [[-20, 20, -37, 45], [-22, 16, 5], [-25, 39, -42, 50, 11], [-22, -8, 47, 6], [32, -16, -7, -16], [8, 18], [46, 25, -7], [-1, 0, 12, 16]]

Solution: [-400, -352, -2100, 1056, 8192, 144, 46, 0]