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: [[-45, 48, 17, -50], [-31, -20, 43, -13], [47, 3, 36, 40]]

[1836000, -346580, 203040]