Fill in one field - the others will be converted to their equvalent amount. As long as you didn't enter anything, each line is independent and will show which values the calculator is using for conversion.
Currently the XRB ticker symbol in capital letters represents 1 million xrb (Mxrb).
kxrb (=mXRB in RaiGames)
xrb (=rai in RPC calls)
fraction of the total supply