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.
[[-30, -11, 28, 42], [43, 42, 23, -19], [-15, -3, -34, -38], [10, 40], [-26, 28, -10]]