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: [[-48, 38], [-41, -15, 8, -2], [31, -10]]

[-1824, -9840, -310]