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: [[50, 48, 38], [-23, 27], [-39, -4, 9, 10, -3], [24, 22, -30, 4, 31]]

[91200, -621, -42120, -1964160]