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.
[[31, -24, -34, 12], [27, 0, 48, -21, 22], [-50, 13], [14, 9, 37, -47], [8, 14, -21, 26, -6]]