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, 25, 37], [-20, -48, -31, -9], [19, 20, 6, 11], [42, -25, 15, -47, 49], [30, -29, -48, 23]]