You will be given a definition of a task first, then some input of the task.
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.

[[2, -7, -3, 40], [9, -18, -9, -23], [9, -29, -15], [0, -34], [-36, -25, -50, -15, -20], [-23, -15, -47, 33, -14], [4, 41, -38], [-12, 37], [-2, -49, 23, 36, 23]]
Output:
[80, -18, 0, 0, -36000, -14, -152, -12, -72]