Xiaohong's mother deposited 800 yuan in the bank on June 30, 2006, and made regular deposits and withdrawals for 2 years. If the annual interest rate is calculated at 2.43%, she can withdraw the principal and tax when she withdraws on June 30, 2008. How much is the post interest?
小红的妈妈2006年6月30日把800元存入银行，定期整存整取2年，如果年利率按2.43%计算，到2008年6月30日取出时，她可以取出本金和税后利息共多少元？
<result>831.1</result>