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.
[[-35, -18, 29, 1], [5, 15, -7, -9], [47, 13, 22, 34, -19]]