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: [[1, 3, 20, 20], [-31, 44, -29], [-50, -47], [-31, 36, 17], [39, 25, 13, -35], [-34, -40, -25], [6, 39], [-50, 38, 39, 11, -17], [18, -48], [-18, -5, -15, 18, -46]]

[1200, 39556, 2350, -18972, -443625, -34000, 234, 13856700, -864, 1117800]