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.
[[18, -35, -8, 35, 42], [7, -2], [42, 35, 20, 7], [-24, 49, 36, 35], [-25, -7, 31], [6, -17], [-41, -31], [28, -16]]