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: [[-10, 39, -31, 2], [-45, 4, 34], [-19, 25, 47, -4], [15, -3], [-10, 18, 50, 30]]

SOLUTION: [-20, 136, -4, 0, -270000]

PROBLEM: [[28, 29, 14, -36], [-35, -16], [-39, -2, -25, -36], [-28, -5, 33, 18, 35], [20, -32, -14, 38], [40, -27], [-1, 20, -26, 4, 24], [-37, -23], [-2, -19], [-15, -39, 12, -33], [26, -34], [-42, -7, -27, 30], [44, -48]]

SOLUTION: [-14112, -16, 72, -504, 340480, 40, -49920, 0, -2, 12, -884, -1260, -2112]

PROBLEM: [[-14, 34, 19, -38], [-13, 17, -42], [-16, 34, -15], [-27, 14, 50, -13], [25, -12, 41, 49, 39], [39, -4, -39, 48, 24], [-18, -36, 18, -10]]

SOLUTION:
[18088, -42, -544, 700, -12, -4608, -116640]