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: [[12, -31, -37], [29, 18, 48, -49], [-11, 21, 0], [5, -1], [-17, -42, -18, 3], [20, 0], [3, 22, 16, -39, -11], [44, 34], [-8, 30, 41, 7]]

[13764, -1227744, 0, -5, -38556, 0, 453024, 1496, -68880]