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.

[[-37, 28, -2, -3], [-13, -6], [46, 11, -18, -31]]
[-56, -6, -828]

[[-25, 34, 42, 30], [-14, 12], [20, -12, -43, 33], [36, 5], [-11, 34, -44, 2, 20], [-49, 45, 19, -45], [-11, -47, -35, 26], [29, 45, 9, -39, 26], [-26, 29, 7]]
[42840, -168, -240, 36, -59840, 0, 26, 26, -26]

[[46, -36, -2, -47, 8], [7, -6, 4, -24, -31], [47, -49, 7], [0, 38], [31, -31], [16, 29, 7], [-11, -38, -43, -49], [-49, 0, 11, 30], [2, 28, 15, 7], [7, -29], [40, 8, 3, -44], [34, 16], [36, 19], [0, -12, 2, 5, 48]]

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
[26496, 576, 0, 0, 0, 16, -38, 0, 56, 0, -14080, 544, 36, 0]

