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.
[[20, 9, 31], [8, 15, 6, 23], [41, -4, -2, 47], [38, -17, -28], [45, 29], [40, 21, -44], [-40, -5, 5, -10], [-41, 8, 21], [-34, 29, 34, -4, 28], [39, -27, 21, -45]]