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, 8, 19], [-36, 28], [33, -49, -11, -6, -40], [-46, 33, 47, 33, 4], [31, -34]]