The result of your conversion between Dram and fifth appears here
To convert between Dram and Fifth you have to do the following:
First divide ((0.000016387064*231)/128)/8 / (0.000016387064*231)/5 = 0.00488281
Then multiply the amount of Dram you want to convert to Fifth, use the chart below to guide you.
Symbol: dr
No description
Symbol: fifth
No description