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: [[20, -49], [24, -16, -38, 50], [-40, 37, -13], [-21, 45], [-17, 17, -5], [-2, 47, -16, -2, -17], [22, 37, -27, -31, 44], [-8, 28, 44, 21, 37]]

SOLUTION: [20, 729600, -40, 0, 0, -64, 968, -9856]

PROBLEM: [[4, 40, -43], [-10, 46, -32, 12, 22], [50, 17, -32], [3, -38, -42, 14], [-14, 48], [31, 17, 0, 34, -38], [-38, -9], [-21, 19, -1], [25, -11], [-17, 2, -22, -47, -26], [36, 44, 46, -5, 35]]

SOLUTION: [160, 3886080, -1600, 22344, -672, 0, -38, 0, 0, 1144, 72864]

PROBLEM: [[-24, 31, 34, -50], [-8, 0, 1, -40, -26], [-47, 33, 0, -9, -29], [31, -14, 25, -29], [10, -14, 39, 24], [-26, 12, -49], [-1, 32, -23], [20, -5, 32], [3, -3, 9], [20, -39, 7, 3]]

SOLUTION:
[40800, 0, 0, -14, -3360, -312, 32, 640, 0, 20]