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.
[[31, -18, -20, 2, -46], [22, 27, -48, -48, -3], [15, -43, -33, 13, 9], [1, 5, 20, -45, -48], [25, -2], [-14, -22, -36]]