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, -12, 48, 19], [9, -25, 48], [-29, -5], [-21, -24], [-33, -38, 35, 42], [-31, 35, -29], [-49, 43, 16], [-45, -43], [16, 10, 22, -28], [-18, 24, 5, 40]]