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: [[31, -37], [49, 6, 16, 34], [42, 23, 5, 31], [-18, -20, 2, -19], [-14, 31, 30, -2], [-35, 2, 10, 49, -17], [41, -4], [-47, -18, 46, 41, -1]]

[-1147, 159936, 149730, -13680, 26040, 583100, -164, -1595556]