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.
[[31, 13], [-5, -41, 31, 11], [18, -40, 33], [24, 31, 33, 43, -3]]