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: [[34, -9], [19, -17, 47, -38], [-7, -23], [30, 26, 30, 35, 19]]

[-306, 576878, 161, 15561000]