instruction:
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.
question:
[[-19, -2, 37], [39, 34, 31, -14, 23], [-3, 40], [3, -6, 37, 15], [-29, 24, -37]]
answer:
[-2, -476, 40, -6, 24]


question:
[[-2, -17, -10], [-4, 9], [-32, -21], [42, 49, 41, -16, 7], [23, 8, -10], [9, -20, -34, 4], [-23, 48], [39, 35, -49], [-40, 50, 45], [-40, 21, -16, 31, 33], [-42, 5, 0], [16, 4, 41, -46], [-11, 40], [37, -28], [23, 28, -7, -28]]
answer:
[20, -4, -32, -672, -80, 2720, 48, 0, -2000, 640, 0, -2944, 40, -28, -784]


question:
[[-12, 28, 7], [-20, -4, -16, 25], [-24, 14], [-34, 27, 29]]
answer:

[-336, -1280, -336, -34]