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.
[[30, 34], [45, -45], [-17, 40, 5, -8, 27], [9, -46, 14], [-12, -40, -49, -2], [40, 47], [-46, 17, -34, 21], [-40, -12, 8, 21], [3, 13, 20, -42, -31]]