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.
[[25, 47, -29, 27], [15, 18, -40, -12, 37], [9, 47, -5, 4], [11, 20, 20, 10], [50, -41], [38, 39, -48, 44, 37], [13, 12, 8], [35, -21], [29, -32, -31, -6]]