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.
[[-18, -31], [-34, -14, -36, 48], [48, 10, -49], [-42, 15, -7, 33], [-28, 0, 0, -16, 47], [48, -25, -44], [8, -39, 13, -48, 31], [-13, 6, 27, 9]]