TASK DEFINITION: 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.
PROBLEM: [[-18, -41], [49, 44, 23, 39], [-17, -36, -41, 42, -43], [25, -27, 6, 39, 26], [47, -36, 30, -50], [-28, -4, -4, 38, -6], [41, 17], [-19, 44, 39], [-37, 19, 33, 4], [-9, -41, 20, -49], [41, -10, 49, 10, -49], [31, 43], [38, -16, -29, -20, 3], [-17, -16, 2, -50]]

SOLUTION: [-18, 44, -1512, 156, 54000, 102144, 0, 44, 4, 20, -100, 0, 12160, 1600]

PROBLEM: [[31, 43, 9, 3], [-27, 50, 18, -46], [15, -43], [25, 36, -48, -12, -23], [-14, -35, -41, -23, -30], [-12, -38], [38, -20], [-25, 5, 29], [25, 31, 45, -50], [35, 17]]

SOLUTION: [0, -41400, 0, 20736, 420, 456, -760, 0, -50, 0]

PROBLEM: [[42, -50, 46, -41, 7], [-2, 13, 12, 1], [12, 2, -19, 9], [48, -21, 7, -36, 44], [25, 14, -22, 2], [9, 29, 49, 25], [-2, 3, 45], [38, -19, 14, 9, -21], [-6, 35, 18, -15, 21], [4, 37, -47, 7], [-17, -45, -6, -16], [5, -20]]

SOLUTION:
[-96600, -24, 24, -76032, -616, 0, -2, 532, -108, 4, 96, -20]