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: [[-31, -22], [-23, -36, -40], [-35, -48, -15], [-7, -15, 31], [25, -33, 31, 21], [-24, 5]]

[682, -33120, -25200, 3255, -537075, -120]