A must for first timers.
Google "Oanda currency converter"
Go to the left hand side of the web page and click on "Cheat sheet" under "Tools"
Enter AU dollars to Rup and it will give you a printable credit card sized conversion table both from dollars to Rup and Rup to dollars.
one table will show $1 = 7800 RP the other will show 7800RP = $1,
These tables go up to $500 from memory.
Glue them back to back and laminate if you can.
You then have a credit card sized ready reckoner that fits in wallets,purses,pockets etc.
Easy to flip from $- RP and also RP-$ to know instantly how much you are about to part with.
We have been using them for some years now and although not always the exact exchange of the day its always close enough.
They are especially handy when changing money in Bali
Money becomes a "Non thinker" and makes for easy bargaining or haggling.
This cheat sheet will do all currencies.