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, 30, 4, 35, 40], [49, 43, 44, 44, -18], [8, 14], [-28, -34, -5, 7]]