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: [[29, 7, 31, -4, 18], [-33, -13, 28], [-49, -24], [-20, 26, -49]]

SOLUTION: [-72, 28, -24, -520]

PROBLEM: [[32, -41], [-5, 46, 17, 48, 21], [-10, -24, 12], [-25, -17, -3, 2, -29], [40, -5, -5, 10], [-30, -3], [-5, 19, 5, -35, 2], [25, 42, -12, -45], [23, 50, -36, 16], [23, 36, -6, -12, 47]]

SOLUTION:
[32, 2208, 2880, 2, 400, -30, 2, -504, -28800, 2592]