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: [[15, 9], [-42, 47, -17, -13], [11, 3, -31, -39, -40], [31, -4], [-11, -12], [-20, -21, 27, 25, -15], [-1, 49, -9], [-16, -22], [-40, 7, -31]]

[135, -436254, -1595880, -124, 132, -4252500, 441, 352, 8680]