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.
[[-40, -4, 9, -8], [-46, 17, 23], [0, 50, -47, 24, 18], [2, 42, 21, 36, 35]]