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: [[31, 35], [-31, -49, 14, -23, 16], [37, -39, -8, -28], [-30, -8, 32], [-36, -30, 7, -39, 37], [5, 13, -15], [17, -39], [-14, -11, 46, 21, 25], [-21, 40, 34, -39, 0]]

SOLUTION: [0, 224, 224, 7680, 1080, 0, 0, -644, 0]

PROBLEM: [[-6, 49, 20], [-20, 8, -19, -9], [-21, 9, 15, -3, -36], [-46, 24], [11, 32, -12], [-38, -28], [-32, 17], [-46, -5, -39, -39], [-19, -9], [-49, 11], [43, 22, 28, -17, -40], [-23, 16]]

SOLUTION: [-120, -160, -36, -1104, -384, 1064, -32, -46, 0, 0, -24640, 16]

PROBLEM: [[12, 42, 23, 0], [-44, -46, 19, 5, -44], [-28, -50, 48], [6, -41, -46, 2, -28]]

SOLUTION:
[0, -89056, 67200, 15456]