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: [[23, 12], [7, -46, 34, -2, 22], [-20, 12, -45, 15, 6], [30, -4, 50, -26, -39], [26, 43, -22, 34, -29]]

SOLUTION: [12, 68816, -1440, 156000, -19448]

PROBLEM: [[18, 15, -11], [23, -31, -1, 2], [44, -32, -12, 47, -47], [33, 26, 15], [30, 20, 16], [-43, -28], [-10, -49, 25, -1, 9]]

SOLUTION: [18, 2, 16896, 26, 9600, -28, -10]

PROBLEM: [[-7, -12, -29, 25, -37], [-11, 26], [26, -32, 2], [36, 22, -1, -48, -29], [26, 47], [33, -4]]

SOLUTION:
[-12, 26, -1664, -38016, 26, -4]