Xiaohua deposits 4,000 yuan in the bank for 2 years. If the annual interest rate is 2.79%, what is the total amount of interest and principal after maturity?
小华将4000元存入银行，定期2年，如果按年利率为2.79%计算的话，到期后应得利息和本金共多少元？
<gadget id="calculator">2.79 / 100</gadget>
<output>0.0279</output>

<gadget id="calculator">4_000 * 0.0279 * 2</gadget>
<output>223.2</output>

<gadget id="calculator">4_000 + 223.2</gadget>
<output>4_223.2</output>

<result>4_223.2</result>