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: [[23, -48, -18], [9, 47, 33, 32, -22], [-30, -23, 9, -25, -17], [-39, 8, 27], [3, -34, 8, -42]]

SOLUTION: [864, -704, -30, 8, 11424]

PROBLEM: [[-16, -15, -38, -41, 9], [-43, 31, 47], [42, 7], [7, 6, -22], [-43, 22, -48, 23], [28, 2, -20, 12], [7, -13], [-47, -22, -19], [4, -27, 21]]

SOLUTION: [608, 0, 42, -132, -1056, -13440, 0, -22, 4]

PROBLEM: [[-40, 15, -31], [-36, 41, 2, 9, -49], [8, -6, 42, -47], [21, -31, 41, -32, 18]]

SOLUTION:
[-40, -72, -2016, -576]