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.

[[39, -6, 35, 27], [-15, -25], [1, 19, -44, -21], [-6, 19]]
[-6, 0, -44, -6]