To calculate a quarterback's rating in NCAA football, you may use the formula $\frac{100 C+330 T-200 I+8.4 Y}{A}$, where $C=$ the number of completed passes, $A=$ the number of attempted passes, $T=$ the number of touchdown passes, $Y=$ the number of yards in the completed passes, and $I=$ the number of interceptions. Sam Bradford of the University of Oklahoma was selected as the 2008 winner of the Heisman Memorial Trophy as the Most Outstanding Football Player. Bradford, a sophomore quarterback with the Sooners, ended the season with 442 attempts, 302 completions, 4464 yards, 53 touchdowns, and only 6 interceptions. Calculate Bradford's quarterback rating for the 2008 season. (Source: NCAA) Round the answer to the nearest tenth.