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.
[[16, -25, -39, -50], [2, -47], [-15, 50, 24, 38, 11], [-3, -44, -8, 37, 4]]