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.
[[-13, -49, 29, -29, -39], [-21, -34, 18, 43, 48], [22, 19, 16], [46, 2], [-12, -13], [36, -40, -15], [20, 18], [41, -43]]