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.
[[39, 38], [24, 10, -25, 46, 25], [-47, -38], [-12, 15], [4, 40]]