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: [[-36, 35], [23, -15], [-41, 23], [5, 31, -7, 31]]

[-1260, -345, -943, -33635]