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.
[[-20, -29, -17], [-31, -17, -16, -25, -25], [5, 7, -15, 13, 30]]