Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following example:
[[7, -3, -3, 11], [-6, -6, -5, 2], [-8, 4, -3]]
Solution: [0, 72, -32]
Reason: 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.

Now, solve this instance: [[-39, -39, 6], [40, 13, 21, -15, 48], [42, 16, 33], [-6, -30, 5], [-32, -35, 30, -34, 46], [28, -9, -9, 9, -39], [-18, -15, 5, -21, -7], [-42, 30, -7, -10], [-26, -3, -45, -11, 18], [-42, 42], [37, 45, 15, -11, 50], [-13, 18, 2, 43], [31, 16, -49, 33], [36, 46], [47, 35, -41, -13]]
Student:
[6, 1920, 672, 180, 1501440, 28, -18, 12600, -468, -1764, 50, 36, 16, 1656, 0]