The tag, with the fraction 36/50 appears to be the size tag, but i don't know what to make of it. I mean, the top and bottom are not equivlent US to European size, so it must mean something else right? can someone tell me what the fraction mean, or is it another totally different size system? I really need to know so I can exchange this for a right size (i can't physically go there to try it on). This is a versace jeans couture sportscoat, made in italy, looks authetic enough, has original tags with Ittierre tag. I am size 36R, so what number over what number should I exchange this for?