Context: With the season on the line, the 49ers got off to a quick start, leading 14-0 in the first quarter with a pair of rushing touchdowns by Frank Gore and Carlos Hyde. The Saints would rebound in the 2nd half to take a 24-21 lead. With 1:34 to go, and the 49ers facing a 4th and 10 from their own 22 yard line, Colin Kaepernick found a wide open Michael Crabtree for a 51-yard gain, that set up the game-tying field goal. On the last play of regulation, the Saints appeared to have scored on a Hail Mary pass from Drew Brees, but the play was overturned by offensive pass interference. In overtime, Ahmad Brooks sacked Brees, causing a fumble recovered by the 49ers Chris Borland on the Saints' 17. On the very next play, Phil Dawson kicked the game-winning field goal, giving the Niners a 27-24 win. This was the Saints first home loss in 12 games, and the first home loss under Sean Payton in 20 games (Payton was suspended for all of 2012 season).

Question: How many points did the 49ers win by?

Answer:
3