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: [[12, -19, -49], [6, 5], [33, 45, 22, 49, 29], [12, 39, -36, -20]]

[11172, 30, 46424070, 336960]