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: [[2, -21, -42, -18], [-16, -3, 8, 15], [-43, 3], [34, -47, -42, 49], [-38, -25]]

[-31752, 5760, -129, 3288684, 950]