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: [[-26, -17, -30, -26], [49, 30, -14, 7, -17], [47, -45, 20], [-24, 14, -41, 7, 41], [27, -29, -35], [1, -23], [-13, 12, -37, -17, 22], [-45, 41, -6, 1, -49], [2, 17, -38, -23], [43, -50, 41], [-19, 1], [-37, -50, 1, 48, -6], [-37, -42, 15], [-36, 44, 1, -1, -41], [25, 1]]
Student:
[-20280, -420, 20, -336, 0, 0, 264, -6, -76, -50, 0, 14400, -42, -1584, 0]