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.
[[-16, 15, -20], [19, -10, -24, -26, -27], [-2, -16, 43, -42, 20], [15, 3, -31, 18, -6]]