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: [[34, -6, 40, -18], [42, -7, 38, -36, 31], [-21, -23], [-20, -45, -12, -31, 12], [34, -32, 25, 15, 43], [-37, 46], [40, -16, -4, -14], [40, 3, -36, 30, 1], [-26, 12, -28]]

SOLUTION: [146880, -57456, 0, 2880, -1088, 46, -35840, -43200, 8736]

PROBLEM: [[0, 50, 16, -48, 7], [-2, -21, 12, 44], [20, -45, 14, 47], [-48, 10, -17, 34, 21]]

SOLUTION: [0, -1056, 280, -16320]

PROBLEM: [[-41, 0, 32, 29], [-42, 16], [32, 27], [40, -17, 0, -23, -3], [-6, 6, 15, 12], [-49, -50, 12], [26, 33, 0], [40, 43, 40]]

SOLUTION:
[0, -672, 32, 0, -432, -600, 0, 1600]