TASK DEFINITION: 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.
PROBLEM: [[-19, -2, 37], [39, 34, 31, -14, 23], [-3, 40], [3, -6, 37, 15], [-29, 24, -37]]

SOLUTION: [-2, -476, 40, -6, 24]

PROBLEM: [[-46, 5, -43, -49], [-8, 21, 15], [17, -27, -50, 40, -34], [49, 25, -33], [32, 6, -27, 26], [0, 30]]

SOLUTION: [-46, -8, 68000, 0, 4992, 0]

PROBLEM: [[-29, 18], [45, -44, -10, -11, 44], [26, 22, -13, 21, 44], [-50, 26], [-28, -5], [21, -1], [-44, 16, 34, 19], [21, 28, 11, 44], [26, 18], [4, -18]]

SOLUTION:
[18, 19360, 25168, -1300, -28, 0, -23936, 1232, 468, -72]