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.
Example: [[7, -3, -3, 11], [-6, -6, -5, 2], [-8, 4, -3]]
Example solution: [0, 72, -32]
Example explanation: The first inner list has no even integers, so the first number in the output is 0. The second list has -6, -6, 2 for even integers so the second output is 72. The third list has -8, 4 as even numbers so the third output is -32. This is a good example.

Problem: [[18, 17], [-48, 16, 17, 1], [-14, 26, -17], [17, 49, -30, -42, 26], [-20, 16, -4, -5, 4], [-39, 23, -37, -25], [24, -40, -23, -4]]

Solution: [18, -768, -364, 32760, 5120, 0, 3840]