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: [[49, -43, 21, 34, 47], [-40, -16, 30], [34, -23, -33, -16, -21], [37, 8, -12, 11, -38], [23, -40, 31]]

[-70706706, 19200, 8670816, 1484736, -28520]