Definition: 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.
Input: [[20, -6], [-34, 14, 40, -22], [26, 20, -29], [-15, -19], [-17, -37], [-6, 6, -9, 20]]

[-120, 418880, -15080, 285, 629, 6480]