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, 50, -6, -4], [-4, -44, 6, 45], [-25, 23, 17, -31, 25], [17, -49, -14, -27, -30], [23, -44], [42, -9, 9, 1, -17], [-5, 48], [37, 18, -26, 35]]
Output:
[-24000, 1056, 0, 420, -44, 42, 48, -468]