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: [[2, 31, 49], [7, -48], [-5, 16, 2, 28]]

SOLUTION: [2, -48, 896]

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

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

PROBLEM: [[2, -7, -3, 40], [9, -18, -9, -23], [9, -29, -15], [0, -34], [-36, -25, -50, -15, -20], [-23, -15, -47, 33, -14], [4, 41, -38], [-12, 37], [-2, -49, 23, 36, 23]]

SOLUTION:
[80, -18, 0, 0, -36000, -14, -152, -12, -72]