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: [[-15, -46, -7], [-8, 15], [-15, -39, 33, -5], [8, 16], [39, 38], [19, -50, -21]]

[-4830, -120, -96525, 128, 1482, 19950]