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.
[[23, 39, 47, -13, -29], [34, -37, 10, -39, -11], [-20, 6], [-34, -37], [12, -29, -3], [-16, -22, 31, -42], [-29, -41, 29]]