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.
[[24, 27, -48, -24, 31], [37, -31, 5, 12, -28], [38, -42], [50, 10, 16, 46, 47], [-28, 12]]