I need to convert from one currency to another and I would like the results to be accurate no matter which way I calculate. I have a problem in converting from one currency to another and back to its original value and there is some discrepency (Eg. $10 x ex-rate = $18.90, then $18.90 x ex-rate = $9.99[should be $10 originally] ) where ex-rate is 99.9999 format. I tried to get the whole value by multi it with 100 or 10000, etc... Pls help and thanks in advance