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: [[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]]

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

PROBLEM: [[-9, -26], [-26, 23, -3, -25, 5], [-28, -15], [45, -6, 12, 49, 45], [31, 22, -11], [41, -34, 18, -7, 31], [43, 23, -49, -34], [27, 0, -39, -40, 27], [-27, -4, -3, -32, -35], [-32, 11, 24, 11, -35], [42, -10, -43, -37], [-43, -2], [-28, -38, -17, 34, 19], [-46, -10]]

SOLUTION: [-26, -26, -28, -72, 22, -612, -34, 0, 128, -768, -420, -2, 36176, 460]

PROBLEM: [[-49, -37, -12], [-48, 16], [40, 8, 4], [13, 45, -4, 49, -19], [-22, -4, 9], [-10, -48, -20, -5], [6, 26]]

SOLUTION:
[-12, -768, 1280, -4, 88, -9600, 156]