I've got no idea how they came up with the figures. But of say...

I've got no idea how they came up with the figures.
But of say 50k people at a match.
Some would be children.
Some woud be non drinkers.
Some would drink wine.
So it would be considerably less than 50k
patrons drinking draught beer.
Maybe 3000 to 5000 draught beer drinkers......plus or minus ?
(Fill in your own most probable estimate)

But over the season.........yes.....1.2 mill litres.
So it then gets back to 1.2 mill litres times the net profit
per litre to the brewery.

And as well......"Show-casing " the brand.