Fang Hua used 600 yuan to buy a 2-year treasury bond with an annual interest rate of 2.8%. After the maturity, he donated both the principal and interest to the "Hope Project". How much did he donate to the "Hope Project".
方华用600元买了2年期的国库券，年利率为2.8%，到期后他把本金和利息都捐给了"希望工程"，他捐了多少元给"希望工程"．
<gadget id="calculator">2.8 / 100</gadget>
<output>0.028</output>

<gadget id="calculator">600 * 0.028 * 2</gadget>
<output>33.6</output>

<result>33.6</result>