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.
[[-10, -8, 28, 11], [47, -18, 4, -27], [15, 47, -34], [-9, 45, -34, 8]]