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: [[-8, -41, -42, 2, 29], [10, -20], [38, 21, 13], [-8, -25]]

[-799008, -200, 10374, 200]