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, 27, 23, 27], [38, -27, -33, -46, 45]]

[519777, -70086060]