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.
[[-47, -6, -45, 11, -15], [-50, -6, 44], [-2, 36, -10, 22, -12], [46, -21, -47, 12, 30]]