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.
[[47, 36, -21, 0], [-44, -21], [-2, -47, -47, -47], [-42, 43, 46, -7]]