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, -21, -29, -8, -29], [-45, 36, 27], [-9, -46, -12], [48, -12, 0, 7], [32, 11, -19, -49]]

[-4379928, -43740, -4968, 0, 327712]