And then adding all these up, well there's none of them that add up that we can just add in to any of the others, so we'll have to leave them all like that, so the answer is just a, a thousand, plus a hundred Y plus ten X, plus X Y. Now if we wanted to multiply, let's say we want to multiply a hundred and three by seventeen, that just means that X is seven, sorry X is three and Y is seven.