Definition: 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.
Input: [[10, 47, -36, -38], [-43, -36, 2, 9], [-34, 15], [3, -38, 23, 15, -20], [-19, 38, -6, -30]]

[642960, 27864, -510, 786600, -129960]