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.
[[-50, -5, 15, -12, 6], [3, -46], [47, 27, 24, -9, -28], [2, 35, -47, 3], [-49, -11, 17, 18]]