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: [[-37, 28, -2, -3], [-13, -6], [46, 11, -18, -31]]

SOLUTION: [-56, -6, -828]

PROBLEM: [[-9, -30], [-10, 7], [50, -8], [-42, 3, 31, 46, -50], [-23, -9, 25, -10, 7], [9, 19, -27], [-46, 49, -39], [-29, -5, -2, 35, 32], [38, -50, 43, -19], [6, -3, 26, -24, -7], [-1, -49, -35]]

SOLUTION: [-30, -10, -400, 96600, -10, 0, -46, -64, -1900, -3744, 0]

PROBLEM: [[-48, 25], [-16, 22, 15, 20, 19], [44, -42], [-36, 21]]

SOLUTION:
[-48, -7040, -1848, -36]