I’m confused about how many shots (standard drinks) is in capriccio sangria

Okay so I try not to go over 5 shots.. 6 at the most, this sparkling wine/sangria says 13.9% alcohol and it’s a 750ml bottle.. someone on Google said it was 2.5 shots and when I used an alcohol calculator it said 6 but I’ve also heard 5… Which one is it???