Also, multiply sg by 131 to find alcohol. Short answer is a pound of sugar will raise alcohol by 1 pct point in a 6 gallon kit.
1 pound of sugar added to 1 gallon, adds 6.18% alcohol (2.36 cups x 0.020sg x 131). Since you're using 6 gallons, divide by 6 to get 1.03% (6.18% / 6)