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: [[32, -18, 27], [37, -4], [6, -9, 21, 29]]

[-15552, -148, -32886]