HI everyone. Pretty new to home brewing. Did a few batches of beer and figured I would try hard cider. Stewed some cider at 180 degrees for an hour and added 2 1/2 cups of brown sugar. Just bottled it and it taste great after 3 weeks of fermenting. The original gravity was1.051 and it was .098 when I bottled. Apparently I'm so new to home brew that I can't do math. When I calculate It comes out to 12.36% abv. (that can't be right) when I calculate 1.051og to 1.000fg it comes out to 6.75. What am doing wrong? Appreciate the help.