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: [[-9, -4, -33, 15], [20, 15], [-33, -40, 18, 10, 49], [14, -25, -5, -19, -47]]

[-17820, 300, 11642400, 1562750]