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: [[40, 27, 25], [-12, 21, 45], [-16, -10, -34, -9, -34], [-21, -1, -15, -42], [1, -43, 49, -24, -28], [0, -23, 5, 50], [-44, 26, 3], [11, 4, 43, 5, 28], [44, 34, -26], [35, -22, -43, -8], [-29, -26], [45, -41], [-2, 19, -7, 7, -32], [-4, 36, -42, -21, -50], [-9, -10, 45, 19, -26]]
Student:
[40, -12, 184960, -42, 672, 0, -1144, 112, -38896, 176, -26, 0, 64, -302400, 260]