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.
[[28, 39, 13, 24, -12], [-50, -20, 39, -38], [47, -3, -37, -45]]