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, 13, 48], [-50, 38, 3, 9], [4, 3, 35], [-11, 22, 24, 21], [-26, -47], [38, 21, 41, -2], [13, -41, 19, -46, -14], [29, 5, -36]]