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: [[-50, 34], [-44, 38, 21, -20], [-38, -45, 29, 12, -19], [-16, -15, 28], [-12, -36, 12]]

[-1700, 702240, -11306520, 6720, 5184]