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.
[[-36, 2, -3, -31, -9], [15, -41, -5], [-28, -16, -28], [-18, -39, -11, 45]]