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.
Q: [[49, -17, -25, 29, 20], [24, 42, 5], [46, -22]]
A: 
[20, 1008, -1012]