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, 18, -15], [-32, -25, -18, 8, -29], [-4, -2, -17, 45], [-25, -2, -4], [19, -18]]

[-11340, 3340800, -6120, -200, -342]