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: [[43, 31], [25, 36], [-13, 46, 9, -48, -13], [-40, -41]]

[1333, 900, -3358368, 1640]