Grams of protein in a 20 ounce glass of milk…?

I drink it straight from the cow, not from the store at all. I guess if someone could tell me how to find out how much Protein is in a 20 ounce glass of whole milk, that would satisfy me too. I already looked all over the internet and I am either going to the wrong places, or its just not there….

I’m pregnant and should be consuming at minimum 80 grams of protein a day. I drink tons of milk. Just want to know how much that contributes to my intake. Any help would be appreciated.

Maybe someone could look on the label in their fridge?

Thanks in advance for all your help.