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: [[42, -4], [-44, 12, -7, -22], [-42, -5], [19, -17, 25, -10]]

[-168, -81312, 210, 80750]