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.
[[31, -20, 48], [5, -25, -47, -38], [0, -38], [2, 14, 38, 10], [13, 31, -32]]