The result of your conversion between yard and pyong appears here
To convert between Yard and Pyong you have to do the following:
First divide ((0.003785411784/231)*1728)*27 / 3.306 = 0.23126281
Then multiply the amount of Yard you want to convert to Pyong, use the chart below to guide you.
Symbol: yd
No description
Symbol: pyong
No description