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.
[[31, 21], [32, 16, 49, 33, -47], [35, 19, -45, 23, -27], [-6, 22]]