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.
[[28, 34, -5, 48], [-8, 30, -24, 10, -6], [-13, 48, -31, 24], [28, -23]]