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.
[[50, 41, 35, 19], [-43, 5, -39, 45], [-15, 33, -21, 46], [-38, -17, -4, 41, 31], [26, -45, -38], [-46, -47, 19], [10, -10, 34, 9]]