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, -42, -21, -29], [39, 18, 39, 40], [-38, 17, -30, -27], [-49, 23, 42], [33, -37, -17, -25]]