Li Nan deposits 600 yuan in the bank for 2 years, with an annual interest rate of 2.25%. After the maturity, she will get a total of 600 yuan in principal and interest.
李楠把600元钱存入银行，定期2年，年利率2.25%，到期后她可得本金和利息一共多少元．
<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</output>

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

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">600 * 0.0225 * 2 * (4/5)</gadget>
<output>21.6</output>

<gadget id="calculator">21.6 + 600</gadget>
<output>621.6</output>

<result>621.6</result>