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.
One example: [[7, -3, -3, 11], [-6, -6, -5, 2], [-8, 4, -3]]
Solution is here: [0, 72, -32]
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.

Now, solve this: [[21, 22, -31, -12, 29], [44, 20, 0, 26], [1, -33, 50, 4], [47, -35, 50, -31], [49, -26, 47, -36], [-39, -28], [44, 2, 13, 41, -9], [4, -14, -9, -20], [24, 35, -24], [-30, 45, 23, -17], [-18, 38, -29, 29], [-50, 13]]
Solution:
[-264, 0, 200, 50, 936, -28, 88, 1120, -576, -30, -684, -50]