And if your talking about Zimbabwean $, then your really in trouble.
500 ZWD = 25 Dhms and note
The Zimbabwe government redenominated the ZWD again on February 2, 2009 at a rate of 1,000,000,000,000 old ZWD to 1 new ZWD.
I don't even want to try to convert at a pre Feb 2, 2009 rate.