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: [[46, 19, 0, 1], [-44, -20], [16, -28, -12, 31]]

[0, 880, 166656]