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: [[12, -9, -2], [5, 34], [43, 47], [-49, 41]]

[216, 170, 2021, -2009]