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

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


Question: [[13, -25, 15], [10, -5, 19], [-30, 14, -11, 6, -9], [-8, 47, 50], [-47, 42, -36]]

Answer: [0, 10, -2520, -400, -1512]


Question: [[-34, -48, -50, 25], [-38, -15, 2, -11, -34], [-43, -16], [38, 18], [46, 46, -1]]

Answer:
[-81600, 2584, -16, 684, 2116]