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: [[-22, 48, 44, -2], [42, 18, 42], [-20, 10, -20], [3, 9, 26, -28, -47]]

[92928, 31752, 4000, 923832]