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: [[-38, -42, -30, 0], [29, 21, -11], [-30, -11, -29], [-43, -14, 19, 46], [-14, 47, 11, 30], [-11, 4], [-14, 42], [-43, 10, -47, -27]]

SOLUTION: [0, 0, -30, -644, -420, 4, -588, 10]

PROBLEM: [[26, 8, -46], [-40, -32, -24], [50, 11], [-29, -46, -8, 5], [-33, 43], [30, -2, -48, 13], [-22, -17, -20], [-9, -39, 21, 8, -42], [18, 12], [-49, -33, -21, -31, 37], [-42, 6, -5, 44], [-17, -44]]

SOLUTION: [-9568, -30720, 50, 368, 0, 2880, 440, -336, 216, 0, -11088, -44]

PROBLEM: [[7, 29, -20], [-42, 50, 50], [50, 28, -36, -23, -36]]

SOLUTION:
[-20, -105000, 1814400]