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.

[[-20, -29, -18, 12], [-43, 20], [28, 24, -29], [-42, -16], [48, 6, 34, -34, -22], [47, 45, 35, 32, 36], [-37, -43, -38, -22, -2], [36, 49]]
Output:
[4320, 20, 672, 672, 7324416, 1152, -1672, 36]