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: [[36, 41, 32, 14, 30], [-9, 12, -36], [-7, -11, 42], [19, -21]]

[19837440, 3888, 3234, -399]