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.
[[5, -28, 42, 13], [-23, 8, -25, -36, -30], [-8, -21, 9, 12, 5], [30, 8, 22, -25, 50], [-7, 23, 1], [42, -28, 17, 13, -22], [34, -39], [49, 40], [5, 22, -38]]