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.
[[-29, -41, 3, -41], [34, -37], [48, -22, 15], [11, -43, 22, 20]]