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: [[-13, -11, -34, 19], [-50, 5, -2], [-2, 9, 49], [-34, -9, -28, -21]]

[-92378, 500, -882, 179928]