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: [[-4, 6, -31, -17], [-28, -2, 2, 18], [-4, -9, 10, 39], [8, -30, -14], [-36, 12, -2], [-9, 7, -41], [-28, -49, -15]]

[-12648, 2016, 14040, 3360, 864, 2583, -20580]