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.
[[-8, 31], [-11, 38, -17, -32], [-18, 1, 28, 1, 35], [3, -38], [-50, 5], [-8, -48, 18], [-25, -29], [39, 18], [29, -34, 35, 21]]