Context: On 14 March 2013, Torres scored the third goal as Chelsea defeated FC Steaua Bucuresti 31 to advance 32 on aggregate to the quarter-final of the 201213 UEFA Europa League. With this goal, Torres became the first player to score in seven different competitions in one season. In April 2013, Torres acknowledged his struggles at Chelsea, saying, "I want to do the things I used to do. I did them at Atletico, I did them at Liverpool, but I am not doing them at Chelsea," but he vowed to "try his heart out" to regain his best form. He scored twice against FC Rubin Kazan in the 31 win in the first leg of the Europa League quarter-final on 4 April 2013, before scoring again in the second leg 32 defeat, with Chelsea progressing to the semi-final 54 on aggregate. Torres scored the opening goal in Chelseas 21 triumph over Benfica in the 2013 UEFA Europa League Final on 15 May 2013. During the final match of the season, a 21 home win over Everton, he scored his first league goal of 2013, and finished the season with 22 goals in 64 matches.

Question: How many goals did Chelsea win by?

Answer:
2