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: [[-17, 12], [29, -42, -42], [37, 35, -25, 20]]

[-204, 51156, -647500]