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.
[[40, -37], [-10, -32, 35, 36], [-18, -34, 46, -29, 49], [45, -48, 28, 24, -20], [-23, -39, -28], [-16, -47], [47, 21, 20], [-15, 27, 24, -5], [-31, -5, 42]]