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.
[[30, -40, 25, 25], [23, -47, 17], [-40, 34, -44, 21, -22], [-26, 22, -46, 32, -15]]