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.
[[4, 31, -29], [-5, 40, -8, -9], [-40, 16], [-32, 1, 10], [-1, 23, -43], [-12, 48], [-7, -1, -19]]