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: [[42, 41, -31], [42, -29, -9, -48], [-19, 23, 23, 44], [-44, -29, -1, 21, 30], [-42, 13], [-6, -20, -50, -31], [-39, -31, -41, 35], [10, 30], [22, -37, 35, 21]]

[-53382, -526176, -442244, -803880, -546, 186000, -1734915, 300, -598290]