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.
[[23, 19, 32], [34, -29, 34], [34, 17], [-43, -4, -12, -31, -45], [27, -20, 40]]