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: [[14, 22, 2], [-13, -18, 41, 31], [-2, -4, -37], [-2, 20, 11, 6]]

[616, 297414, -296, -2640]