The result of your conversion between Dram and ton [Short, US] appears here
To convert between Dram and Ton [Short, US] you have to do the following:
First divide ((0.000016387064*231)/128)/8 / 0.45359237*2000 = 0.
Then multiply the amount of Dram you want to convert to Ton [Short, US], use the chart below to guide you.
Symbol: dr
No description
Symbol: ST
No description