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: [[15, 45, -1, 13, -15], [50, 29], [19, 40]]

SOLUTION: [0, 50, 40]

PROBLEM: [[7, 42], [-48, 26, 5, 7, 46], [21, -15, -17, -14, -25], [26, 26, -32], [-1, 17, -50, 17], [41, -37]]

SOLUTION: [42, -57408, -14, -21632, -50, 0]

PROBLEM: [[11, 25, -23, -30, 3], [-8, -3], [-34, 6, 31, 15], [-9, -30], [-7, 30, 7, 16], [34, -49, -38, -49, 26], [-47, -2, 49, 42, 13]]

SOLUTION:
[-30, -8, -204, -30, 480, -33592, -84]