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, -48, -46, -31], [-43, 0, -38], [4, -46], [-50, -27, -7, -14], [-3, 22, 44, 45, 1], [2, -17, -29, 49, -1], [-36, 32, 46, 45], [43, -6, 42, 32, -11], [-39, 39, 38]]

[-2121888, 0, -184, 132300, -130680, -48314, -2384640, 3814272, -57798]