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: [[-42, 13, -21, 2, -47], [31, 20, 22], [-7, -8, 33, 29, 45]]

[-1077804, 13640, 2411640]