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, -14, -39], [-41, -45, -42, -28], [32, -21, 27, -7, 3], [38, -48], [16, 35, -29], [-14, 46, 13, 32], [40, -31], [-17, 2, -37], [30, -46, -27], [-50, -38]]

[16926, 2169720, 381024, -1824, -16240, -267904, -1240, 1258, 37260, 1900]