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: [[41, -7, 23], [7, 6, 46, -42, -38], [-3, 1, 4, -31]]

[-6601, 3083472, 372]