How many root beer floats does a 2 liter bottle of make?

A 2-liter bottle of soda, assuming it's full, contains just over 67.63 fluid ounces of soda. A typical root beer float recipe calls for 1 scoop of ice cream and 12 ounces of soda, so a 2-liter bottle of soda will make a little over 5 root beer floats.