When you upgrade either gold or grog the hourly production rate goes up by a set amount but these don't add up for example, a grog distillery going from level 7 to 8 says the production rate increases to 2000 up 750 but when you upgrade from level 8 - 9 it says the production rate increases to 2750 up 1250. Shouldn't that be 3250 as the production was already 2000 at level 7. The same thing happens with gold level 7 production 1500, level 8 - 2000 apparently up 750. Either someone can't add up or I am missing something.
The grog thing works. From lvl 7 to 8 is 2000+750. From 8 to 9 is 2750+1250. Each level up is (previous lvl amount+how much up previous level)+how much up this level.
that sort of makes sense but if that is the formula it is a bit misleading as the +1250 from lvl 8-9 must be cumulative not just the extra from one level to the next
Maybe I'm missing something, because I don't understand what's so confusing about it. When you hit the upgrade button, it shows two numbers: Current production, and production increase from that upgrade. When the upgrade is complete, the sum of both those numbers should become the Current production shown on the next upgrade screen.