I don't think Long posts here, but he is in our LS and i will personally make sure this is resolved.
Also, have you talked to him about this prior to posting here? If not it's a pretty ****** thing to do he may just be bad at math.
I would ask you to remove this post for now, keep it saved in a text file or something until this is resolved so as not to smear someone unnecessarily. You of course do not need to do this, I am simply askign it of you.