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.
[[19, 40, 32, 5], [49, -6, -4], [40, -13, 13, 39], [43, -6, -44, 9, 37]]