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: [[15, 45, -1, 13, -15], [50, 29], [19, 40]]

SOLUTION: [0, 50, 40]

PROBLEM: [[-49, -13, 16, -46, -12], [50, 8, 14], [-36, 30], [-35, -39, 43], [-28, 27, -18]]

SOLUTION: [8832, 5600, -1080, 0, 504]

PROBLEM: [[-18, -34], [22, 23, -40, 8, -7], [11, 10, 20]]

SOLUTION:
[612, -7040, 200]