Zhang Hui deposits 5,000 yuan in the bank for three years, with an annual interest rate of 2.89%. After the due date, 20% of the interest tax will be deducted, and he will donate the remaining interest to the "Hope Project". How much can Zhang Hui donate?
张辉存入银行5000元，定期三年，年利率为2.89%．到期后，扣除20%的利息税，他把剩余的利息捐给"希望工程"．张辉可以捐多少元？
<gadget id="calculator">2.89 / 100</gadget>
<output>0.0289</output>

<gadget id="calculator">5_000 * 0.0289 * 3</gadget>
<output>433.5</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">433.5 * (1/5)</gadget>
<output>86.7</output>

<gadget id="calculator">433.5 - 86.7</gadget>
<output>346.8</output>

<result>346.8</result>