The result of your conversion between ounce [US, liquid] and fifth appears here
To convert between Ounce [US, Liquid] and Fifth you have to do the following:
First divide (0.000016387064*231)/128 / (0.000016387064*231)/5 = 0.0390625
Then multiply the amount of Ounce [US, Liquid] you want to convert to Fifth, use the chart below to guide you.
Symbol: oz
No description
Symbol: fifth
No description