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: [[12, -31], [44, 0, 3], [45, 34, -8, 33], [-28, 12, -46]]

[-372, 0, -403920, 15456]