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: [[-2, -42, 44, -37], [20, 35], [-16, -31, -19, -39, 8]]

[-136752, 700, 2940288]