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.
[[15, -48, 36, -35], [-14, 34, 20, 15], [42, -31], [-43, -17, -11, -9], [40, -39], [32, -2, -37, 20, 38], [17, -3, -31, -21]]