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: [[-18, -20], [-6, 31, -17, 33, -39], [17, 34, -43], [18, -4, 22]]

[360, -4069494, -24854, -1584]