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.
[[21, -48, 27, 35, -50], [-45, -5, -34, -26, 42], [-11, -29, -27]]