Xiao Fang used 300 yuan to buy a 2-year treasury bond with an annual interest rate of 2.8%. After the maturity, he donated the interest to the "Hope Project". How much did Xiao Fang donate to "Project Hope".
小方用300元买了2年期的国库券，年利率为2.8%，到期后他把利息捐给了"希望工程"．小方捐了多少元给"希望工程"．
<gadget id="calculator">2.8 / 100</gadget>
<output>0.028</output>

<gadget id="calculator">300 * 0.028 * 2</gadget>
<output>16.8</output>

<result>16.8</result>