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.
[[15, 29, -25], [38, 47, -2], [13, -38, -22, 9, 40], [29, 24], [47, 15, 28]]