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: [[31, 46, -6, 48, -18], [36, 0, 33, -13], [26, -40, -28], [-5, 10], [-9, 48, 2, -5]]

[7392384, 0, 29120, -50, 4320]