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.

[[-27, 42, 43, 45], [-42, 1, -10], [-9, -5, 7, 40, 37], [-18, 1]]
Output:
[42, 420, 40, -18]