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: [[24, 7, 50, 31, -2], [-2, -30, -12, -2]]

[-520800, 1440]