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: [[17, -11, 17, 4, -9], [-24, -31, -15], [7, 27, 49, 26], [-50, 45, -5, -40]]

[114444, -11160, 240786, -450000]