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: [[1, 21, 46, -14], [38, -23, -15], [-50, 2, 37, 10], [44, -12, 33, -5]]

[-13524, 13110, -37000, 87120]