Ok on this one I will do the top first. You do -9 x -9 x -9 which is -729. So the numerator is -729. Then for the bottom -9^7 is -4782964. And -9^-2 is -0.012345679. So, multiply those two together and you get 59048.9382 because anytime you do a negative times a negative you get a positive. So the answer would be..-729/59048.9382. Then the simplified answer would be..-1215000/-9414897.