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.
[[35, -50], [45, 39], [-7, 35], [42, -3], [19, -49], [15, 28, -11, -7, -42], [25, -20, 31, -48], [-10, 3, 37, 21, -12], [23, -5, -48, -15], [20, 21, -20]]