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.
[[40, -24], [-32, -22, -37, 5], [-13, 31], [45, -4, -48], [-50, 36, -18, 6], [24, 17, 15], [18, -31]]