The result of your conversion between Dram and Milligram appears here
To convert between Dram and Milligram you have to do the following:
First divide ((0.000016387064*231)/128)/8 / 0.000001 = 3.6966912
Then multiply the amount of Dram you want to convert to Milligram, use the chart below to guide you.
Symbol: dr
No description
Symbol: mg
No description