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.
[[-48, -3, -31], [-49, 2, -23, 23], [-47, -23], [-37, 1], [15, 16, -41], [42, 31, -50, 42, -1], [-18, -25]]