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.
[[19, 50, -44, 48], [8, -43, -10], [39, 5], [-43, -43, 47, 12, -47]]