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.
[[-28, -22], [43, 15, 9, -29, 41], [26, 10, 13, -4, -47], [-4, 13, -26], [50, 20, -25, -46, 19]]