In 10six, your TU and V$ amounts never record decimal values, and your exchage rate will round off to the 1st place. For example, if you have an exchange rate of .51, and you sell 1 TU, you will get 1 V$ instead of .51 V$. This is a 100% exchage work, but that is too much work to click, type one, and click "exchange" so often. But, it also can work to your advantage with larger amounts, just not at a 100% exchange rate, it might be more like 80%, depending on which number you enter. Be careful though, since it can also hinder you from gaining as much as you should.