Coming off of their road win over the 49ers, the Ravens went home for a Week 6 interconference duel with the winless St. Louis Rams.  With QB Steve McNair out with injuries, back-up Kyle Boller was given the start. In the first quarter, Baltimore took flight early with kicker Matt Stover getting a 43-yard field goal for the only score of the period.  In the second quarter, the Raven continued to take advantage of an injury-plagued Rams team with Stover kicking a 42-yard field goal, along with RB Willis McGahee getting a 6-yard TD run.  In the third quarter, Baltimore increased its lead with Stover nailing a 23-yard field goal.  Afterwards, St. Louis would get its only score of the game as kicker Jeff Wilkins got a 32-yard field goal.  In the fourth quarter, the Ravens sealed their easy win with Stover kicking a 31-yard and a 36-yard field goal. During the win, the Ravens defense forced six turnovers, which included a franchise-best 5 interceptions.
Question: How many yards longer was Matt Stover's longest field goal over his shortest one?
Answer: 20