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: [[28, 49, 49, 1, 16], [18, 31, 7, 16], [33, 33], [-19, 38]]

[1075648, 62496, 1089, -722]