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.
[[-43, 34, 34, 43, 13], [-15, 34, -38], [36, 16, 40, -40], [12, -46]]