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.
[[26, 14, 36], [-15, -40], [-20, -18, 33, -19, -29], [31, 35, -9, 47]]