TASK DEFINITION: In this task you will be given a list of lists, of numbers. For every inner list, you should multiply every number in that list and put the results in your answer. The output should be a list of numbers with the same length as the number of the lists in the input list.
PROBLEM: [[31, 8, -8, -7], [-26, -16]]

SOLUTION: [13888, 416]

PROBLEM: [[-29, -43], [-14, 23], [-39, 48, -33, -34, 42], [-45, 38, 46, -44, 28], [-33, -41, -22, 32, 50]]

SOLUTION: [1247, -322, -88216128, 96909120, -47625600]

PROBLEM: [[-39, -2], [31, 17, 50], [14, 11, -10, 43], [39, 21, -2], [18, -10, 22, 0], [-19, 8], [5, -11, -21], [-39, 15, -9, -9, 8]]

SOLUTION:
[78, 26350, -66220, -1638, 0, -152, 1155, -379080]