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, 30, -4, 11, -28], [-17, 29, -20, -49, -22], [-21, -23, 0, -4, -16], [-27, -14, 37, 33, 9], [31, -39, 22, -20, -37], [32, 1, -1], [-45, -12, -36], [-50, -50, -6], [2, 5, 42, -24], [0, 48, -22], [-20, -8]]

SOLUTION: [-67200, 440, 0, -14, -440, 32, 432, -15000, -2016, 0, 160]

PROBLEM: [[-46, -42, 17, 28], [19, -46, -43, -15], [-31, -18, 46, 26], [38, -9, -47, -17, -13], [-30, -23, 5], [-18, 21], [10, -33, -38, -15, 3], [-44, 17], [28, 6, 50, -9], [-6, 40, 17, -17], [-6, -18], [20, 37, -26, -37, 42], [-22, -2, 29, -27]]

SOLUTION: [54096, -46, -21528, 38, -30, -18, -380, -44, 8400, -240, 108, -21840, 44]

PROBLEM: [[31, -5, -15, 33], [-30, 13, 7, 43, 9], [-46, 32, 5], [-8, -25, -3], [34, 47, 41, 25, 37], [-7, 41, -50, 13]]

SOLUTION:
[0, -30, -1472, -8, 34, -50]