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.
[[-8, 48], [-7, 10, -46], [-36, -8], [-12, -21, -39], [24, 17], [-18, -21]]