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: [[-16, -16, 20, -31], [43, -44, 10, -8, 25]]

[-158720, 3784000]