In week 16, the Lions flew back to Florida, this time to play the Miami Dolphins. The Lions took an early lead with a 39-yard field goal by Dave Rayner. The Dolphins tied it up with a 40-yard field goal by Dan Carpenter. In the second quarter, the Lions took the lead when Brandon Pettigrew caught a 20-yard touchdown pass. The Dolphins tied it up with a 4-yard rush by Lousaka Polite. Miami took the lead with a 13-yard TD catch by Davone Bess. After halftime, the Lions tied it back up with a 5-yard TD rush by Maurice Morris. The Dolphins responded with a 1-yard TD run by Ronnie Brown. Miami added to their lead with a 28-yard field goal. The Lions then scored 17 unanswered points. First Jahvid Best caught a 53-yard TD pass. Then Dave Rayner kicked a 47-yard field goal. They sealed their win when DeAndre Levy intercepted a Chad Henne pass and ran it back 30 yards for a touchdown. With the win not only did the Lions improve to 5-10, but it was their first back-to-back road victories since 2004, and first three-game winning streak since 2007.
Question: How many yards longer was Rayner's second field goal over his first one?
Answer: 8