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.
Input: [[-31, -34], [-41, 24, 17, 13, 39], [-32, 33, -18, -16, -23], [-22, -27, 43, -42, 17]]

[1054, -8481096, 6994944, -18236988]