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: [[39, 8, 7, -46, 49], [41, -42], [-50, -2, 34, 2], [-2, -8, 34, 30]]

[-4922736, -1722, 6800, 16320]