It might help. It says you get 150 gallons of wine per ton of grapes, but I'm not sure if they are US or imperial gallons. If imperial then 1kg = 75.168cl but I'm not sure whether this is before or after the 25% wastage. If after then it means my earlier answer of 1925 is okay, but if it's before the wastage then it's around 1440.
But I'm still not sure whether you have to allow for the sugar that's added or other additives. I suspect you don't need to allow for this as it would seem pointless specifying all this detailed info but then missing out some key data.
I wonder if Jim360, prudie, Buenchico, vascop etc have seen this.