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.
[[47, 31, 42, 32, 21], [12, 42, 28, 10, 45], [25, -43], [50, -23, 21], [-40, -46], [11, -36, 48, -10, 13], [-14, 13, 43, -1, 49], [-31, 5, 16, 2, 35], [29, -42], [-50, -14]]