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, 23], [-47, -23], [41, -3, 21, 13, 26], [31, 10, -40, 23, 46]]