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: [[42, 47, -40], [-10, 47], [-23, 24]]

SOLUTION: [-1680, -10, 24]

PROBLEM: [[-15, -40], [-10, -38, 23, 2, -11], [-1, 37, -27, -48], [-33, -5, 13, -22, 10], [31, -7, 45], [48, -29], [26, 0], [36, 20, 33, 43], [6, -18, -39], [37, -37], [-16, -25, -15], [-28, -23], [10, -30, -38]]

SOLUTION: [-40, 760, -48, -220, 0, 48, 0, 720, -108, 0, -16, -28, 11400]

PROBLEM: [[41, -16, 9], [38, 40, 50, 20], [0, -43], [-10, -4, 5, 24, -41], [-21, -38, 26], [-40, 49, 2, 21, -2], [50, 17, 42, 17], [-21, 36], [-21, 19, -30], [-28, -44, 13, 27, 16]]

SOLUTION:
[-16, 1520000, 0, 960, -988, 160, 2100, 36, -30, 19712]