The recognized size for a standard pour of wine is around 5 ounces. So, if you're doing the math, a bottle should yield ... which are much higher in alcohol content than standard table wines ...
"Is it beer before liquor ... 14 grams of pure ethanol alcohol. 1 ½ ounces is the equivalent of 44mL. So, a 750mL bottle divided by 44mL portion sizes comes out to roughly 17 shots per bottle.