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: [[15, 18, 30, 43], [29, -9, 40], [2, -34, -29, 16, -8]]

[348300, -10440, -252416]