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.
[[11, 36, 26, 2], [-40, 45, 19, 34], [45, -36, -26], [31, -13, 25, 4]]