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: [[-29, 47], [27, 29], [49, -21], [-35, 5, -30, -10]]

[-1363, 783, -1029, -52500]