Commonly used on the internet to rate a trolling. Most of the time, X=0.
(Promptly after a Duckroll)
"10/10, op, you got me good."
"0/10 op, we all knew it was coming. fag."
X/10 = E(Q3) +2R /F
R= dubs, trips, quads, pents, hex, sects, octs. (If monos, R=0)
X= rating, E= trolling, F= faggotry of OP