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.
[[-8, -43, 48, 23], [21, 17, 25], [10, -42, -15, 4], [-29, 13, -37, -39, 19], [43, 2, 20]]