Manchester City are scoring goals at a frightening rate this season, particularly at home at the Etihad, so you'll have to forgive them for the strain it's putting on their mathematics.
Edin Dzeko scored the final two goals in the 6-0 rout of West Ham United in the first leg of the League Cup semi-final, but obviously forgot one of the goals somewhere on the field. As he says after the match, in quotes picked up by the Daily Mirror amongst others:
We are getting better all the time. It’s not easy to win 5-0 at home against a Premier League team, but we did.
Was it 6-0? Oh!
It's not the first time this season City's sums have not added up, with manager Manuel Pellegrini appearing confused about how many goals it would have taken to usurp Bayern Munich at the top of their Champions League group.
Leading 3-2 in Germany late on, Pellegrini appeared not to realise that a 4-2 victory would have been sufficient, and made a substitution to protect his lead, rather than seek one more goal.
He later indicated that he had not understood what result his side needed.
For the record it might be a useful time to point out just how prolific Manchester City have been this season, without Dzeko or Pellegrini to confuse matters:
Manchester City have now scored 92 goals in 31 games in all competitions after beating West Ham 6-0 tonight— Oliver Kay (@OliverKayTimes) January 8, 2014