If you have ever looked at transaction costs or other events priced in milliDOTs and wondered how much that is, we've got the math for you!

1 milliDOT is one thousandth of 1 DOT

1 divided by 1,000 = 0.001 

So one milliDOT is 0.001 DOT.

So when you see that e.g. a transaction costs 15.4 milliDOT, then you just need to multiply this by 0.001 DOT, which comes to 0.0154 DOT in this case. 

Learn more about the decimal places of Polkadot and Kusama here.