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: [[-17, -13, 8, -32], [-21, -12], [23, 5, -21]]

[-56576, 252, -2415]