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.
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Question: [[-15, 21, -15, -36, 14], [-48, 29, 33, 14, -17], [-30, 39, -24, -2, 46]]

Answer: [-504, -672, -66240]


Question: [[-10, 39, -31, 2], [-45, 4, 34], [-19, 25, 47, -4], [15, -3], [-10, 18, 50, 30]]

Answer: [-20, 136, -4, 0, -270000]


Question: [[49, -34, 46], [4, 43, -11, 43, 47], [47, 35, 44, -17], [-37, -47, 41], [16, -2, -8, -21], [47, -14], [-20, 7], [-13, 17]]

Answer:
[-1564, 4, 44, 0, 256, -14, -20, 0]