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, 31, -37, 0], [23, 35, -43], [20, -45, 4, -3], [-41, 10, 1], [-44, -3, -49, -27], [43, 17, 28], [32, -40, 12, -46, 6], [-33, 17], [-38, 46, 14, -29, -15], [-3, -17, 24], [26, -43]]

SOLUTION: [0, 0, 80, 10, -44, 28, 4239360, 0, -24472, 24, 26]

PROBLEM: [[-5, 30, -4, 25], [2, -7], [45, -31, -16], [21, -23], [-43, 46], [-24, 44, 33, -28], [8, 0, -14, 4, -2], [-13, 40, 23, -17, 40], [-28, 19, 25, 38], [18, -16, -32, -47]]

SOLUTION: [-120, 2, -16, 0, 46, 29568, 0, 1600, -1064, 9216]

PROBLEM: [[23, 9, 35], [-12, -46, -41, 15, -14], [7, 23, 35, -44, 15], [18, -36], [30, 10, 39], [44, 3, -7, 15], [-44, 31], [-43, -34], [-16, 23, 37], [47, -17], [-25, 21, 3, 0]]

SOLUTION:
[0, -7728, -44, -648, 300, 44, -44, -34, -16, 0, 0]