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, -39, -49, 12], [-36, -47], [-18, 28], [-14, -43, 14, 50], [36, 3, 29, -21, 31], [27, 33], [1, 36], [33, 28, 3]]

[-710892, 1692, -504, 421400, -2038932, 891, 36, 2772]