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: [[9, -37, 39], [-18, 47, 14, -14, 47], [3, -50, -46, -48]]

[-12987, 7793352, -331200]