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, -34, 2, 28, -13], [47, -37], [-43, -44, -33, -29, 3], [49, 16]]

[940576, -1739, 5431932, 784]