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:
[[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]]
answer:
[-264, 0, 200, 50, 936, -28, 88, 1120, -576, -30, -684, -50]


question:
[[15, 12, 9], [42, 49], [-39, -29, -18], [32, -2, -16], [-40, 33], [29, -48, -11, 47], [7, 30], [43, -26], [-10, -11, 2, -13, 14], [25, 46]]
answer:
[12, 42, -18, 1024, -40, -48, 30, -26, -280, 46]


question:
[[-8, 17, -45, -39, 0], [34, 13, -30, 17, -29], [-29, -43], [-35, -26, -32, 50, -30], [36, 9, -38, 26], [29, 30], [-18, 43, -27, 46], [-38, -50, 9], [-22, -12, 9], [-39, 33, 50, 19], [-4, 11, 7, -44], [37, 18]]
answer:

[0, -1020, 0, -1248000, -35568, 30, -828, 1900, 264, 50, 176, 18]