Definition: 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.
Input: [[40, 40, -50, -25, -48], [48, 31], [-8, -17, 38, 34, 21]]

[-96000000, 1488, 3689952]