You will be given a definition of a task first, then some input of the task.
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.

[[-39, -21, 22, -37, 4], [-9, 42], [16, 30, 7], [47, -49, 14, 30], [-18, -8, -36, 4, -28], [-28, 16, 43, 50, 16], [-20, -31, -7], [27, -35], [6, 44, 37], [43, -11, -50, 20, -21], [-33, 4, -13, 2], [46, -45, 11], [18, 15, 29, 34], [-44, -40, 35, -31], [26, -27, 19, 34]]
Output:
[88, 42, 480, 420, 580608, -358400, -20, 0, 264, -1000, 8, 46, 612, 1760, 884]