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, 40, 3], [44, -13, -37], [28, 18, -19, -43, -47], [-23, -2], [4, 40, -26, -39, -23], [49, 9, 13, 35], [-50, 35, 1], [14, -13, 22, 37, -5], [-50, -14]]

[3720, 21164, -19353096, 46, -3731520, 200655, -1750, 740740, 700]