There are about 49 million bubbles in a 7500ml bottle of Champagne.q 

If you’re drinking good Champagne, you’ll be able to see the “collerette.” This refers to the bubble trains traveling up the sides of the glass. The first glass of Champagne has the most bubbles, meaning the first glass will also get you feeling drunk the fastest. Every glass thereafter poured from that bottle will be more potent than the one that follows. https://buzdrinks.com/production/