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: [[-6, -21, -14], [-42, -14, -36, -11, 36]]

[-1764, 8382528]