Zhang Hua deposits 500 yuan in the bank for a period of two years, with an annual interest rate of 2.79%, and no interest tax will be deducted. How much yuan can he get back at the maturity date?
张华存入银行500元，定期两年，年利率2.79%，不扣利息税，到期时一共能取回多少元．
<gadget id="calculator">2.79 / 100</gadget>
<output>0.0279</output>

<gadget id="calculator">500 * 0.0279 * 2</gadget>
<output>27.9</output>

<gadget id="calculator">500 + 27.9</gadget>
<output>527.9</output>

<result>527.9</result>