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.
[[13, 25, 39], [-26, -4, 40, 8, -14], [-12, 48], [37, -35, 49, 18, 7], [-14, 0], [-25, -36, -18, 21]]