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: [[49, -1, -20, 42], [13, -48, 12], [37, -38, 35, 29], [42, -25, -28, 3, 28], [40, -31, 40, -22, -49], [-14, -19, 0], [45, 6, 17, 16], [-23, -16, -18, 4, 18], [3, -18], [-33, -46, 44, 15]]

[41160, -7488, -1427090, 2469600, -53468800, 0, 73440, -476928, -54, 1001880]