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: [[38, -3], [5, -7, 40, 43, -7], [-6, 29, -35, -29, 43], [8, 38, -20]]

[-114, 421400, -7594230, -6080]