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: [[3, 31, -19, -15, 31], [-24, 30, -14, -6, 7]]

[821655, -423360]