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, -12, -13], [-37, -23, -6, -17], [14, -14], [23, 22, 34], [23, 15], [42, -42, 31, -50], [22, 44, -8, 13, -20]]

SOLUTION: [-12, -6, -196, 748, 0, 88200, 154880]

PROBLEM: [[47, 10], [5, 3], [40, 0], [3, 30, -35], [-2, 3], [33, 7, 42, 12, 29], [-27, 17, -46, 10], [45, -9, -4, -28], [44, 38, 26]]

SOLUTION: [10, 0, 0, 30, -2, 504, -460, 112, 43472]

PROBLEM: [[-30, 0, -10, -34, -7], [-30, 34], [-47, 22, 38, -22, -40], [-25, 41, -5, 20]]

SOLUTION:
[0, -1020, 735680, 20]

