The result of your conversion between Long ton and Dram appears here
To convert between Long Ton and Dram you have to do the following:
First divide 0.45359237*2240 / ((0.000016387064*231)/128)/8 = 274853065.92240489
Then multiply the amount of Long Ton you want to convert to Dram, use the chart below to guide you.
Symbol: lt
No description
Symbol: dr
No description