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, -8, 6, 29], [-22, 47], [-31, -20, 2, 11], [8, -42, 29, 14]]

[68208, -1034, 13640, -136416]