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.
[[-18, 41, -1, 7, 19], [-37, 49], [-11, 36, -39, -1, 48], [3, 0, -18, 16, -2]]