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.
[[-42, -15], [-30, 44], [-11, -17, -33, 19, 50], [48, -18, -29, -50], [23, -39, 33, 40]]