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: [[-31, 35], [-21, -37, 43, 50], [-36, -38]]

[-1085, 1670550, 1368]