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.
[[22, 14, 45], [21, 9, -3], [27, 31], [12, 35, -47, 7, 9]]