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.
[[49, -38, -42], [31, 42], [-11, 11, -50, 12, 9], [-36, -5, 5, -19, 22], [-43, -12, -35, -14], [-32, 34, 42, -23, -48], [-14, -22], [29, -9, -7], [9, 20, -28, 40, -42]]