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: [[16, -32, -5], [-3, -2], [-2, 0, 12], [-15, 50, -16]]

[2560, 6, 0, 12000]