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, 43], [-38, -22, -28, 8, -23], [23, 13, -21], [29, -35, -43, 20, 39], [-42, -47, -39, 39], [-45, 2], [8, -50, -2, -6]]

[1333, 4307072, -6279, 34043100, -3002454, -90, -4800]