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: [[29, -21], [26, -3], [-2, 31, 41, -20, 41], [9, 50, -25, -16, -4], [-42, -8, 50], [-4, 28, -23, 48], [5, -39], [-16, 20, -1, -23], [-9, -39, 41]]

[-609, -78, 2084440, -720000, 16800, 123648, -195, -7360, 14391]