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: [[7, 28, -50, 38], [-24, -35, -1, -9, -37], [19, -30, -38]]

[-372400, -279720, 21660]