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.
[[-35, -15, 39, 48], [-3, -18, 41], [41, -39], [-4, -24, 37, 45, 20], [-50, 49, 15], [13, 14]]