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: [[9, 41], [-4, -44, 30, 49], [45, 10, -33, 2, 28], [5, 11, 28]]

[369, 258720, -831600, 1540]