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, -3, -15], [-2, -22, -45, 35, -45], [30, 25, -37, 36], [-32, 3, -45], [-25, -23, 44, 47, 19], [-20, -8, 41], [33, 17], [44, 7, 17]]

[1395, 3118500, -999000, 4320, 22592900, 6560, 561, 5236]