How much is 1 pint plus 7.7 ounces?

There is no easy way to convert between pints and ounces. This has to be done in steps. First convert the ounces to cups:

7.7 ounces is 7.7/8=0.9625 cups. Then add the pints:

1 pint = 2 cups. 2 cups + 0.9625 cups = 2.9625 cups.

To finish the conversion, convert cups back to ounces:

2.9625 cups x 8 = 23.7 ounces.