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.

[[20, -49], [24, -16, -38, 50], [-40, 37, -13], [-21, 45], [-17, 17, -5], [-2, 47, -16, -2, -17], [22, 37, -27, -31, 44], [-8, 28, 44, 21, 37]]
[20, 729600, -40, 0, 0, -64, 968, -9856]

[[-29, -46, 2, -48], [-48, 38, -16, -34], [-26, 4], [22, 43, 0, -24], [28, -30, -23], [45, -38, 17], [-36, -3, 35], [14, -20, -6], [-27, -47, -25], [29, -21, 37, -46], [2, -1], [-38, -41, 21, 31], [-9, -4, 33]]
[4416, -992256, -104, 0, -840, -38, -36, 1680, 0, -46, 2, -38, -4]

[[37, -47, 33, -14], [42, -11, 5, 31], [-42, 40, 46, -42], [29, -18]]

[-14, 42, 3245760, -18]