Trying to snap a three-game losing streak, the Seahawks flew to Bill Walsh Field at Candlestick Park for a Week 8 NFC West rematch with the San Francisco 49ers.  In the first quarter, the Seahawks took flight as kicker Olindo Mare got a 43-yard and a 42-yard field goal.  In the second quarter, Seattle increased its lead with RB T. J. Duckett getting a 1-yard TD run.  The 49ers responded with kicker Joe Nedney getting a 42-yard field goal.  The Seahawks closed out the half as CB Josh Wilson returned an interception 75 yards for a touchdown. In the third quarter, San Francisco responded with Nedney making a 40-yard field goal, yet Seattle responded with QB Seneca Wallace completing a 43-yard TD pass to FB Leonard Weaver.  In the fourth quarter, the 49ers tried to rally as QB Shaun Hill completed a 2-yard TD pass to WR Jason Hill, yet the 'Hawks pulled away as Wallace hooked up with Weaver on a 62-yard TD pass.
Question: How many is the difference in the number of yards in Duckett's TD run and the number of yards of Mare's first field goal?
Answer: 42