The result of your conversion between Dram and Robie appears here
To convert between Dram and Robie you have to do the following:
First divide ((0.000016387064*231)/128)/8 / 0.00001 = 0.36966912
Then multiply the amount of Dram you want to convert to Robie, use the chart below to guide you.
Symbol: dr
No description
Symbol: ?
No description