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.
[[-4, -18, 13, 48], [-36, 46, -33, -6], [-17, -33, -7, 35, -39], [-19, -46, 10, -6, 36]]