Xiaoqiang deposited 1,200 yuan last year, fixed for one year, and the annual interest rate is 2.25%. When it matures, how much yuan can he withdraw the principal and after-tax interest.
小强去年存款1200元，定期1年，年利率是2.25%，到期时，他可以取出本金和税后利息多少元．
<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</output>

<gadget id="calculator">1_200 * 0.0225 * 1</gadget>
<output>27</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">27 * (4/5)</gadget>
<output>108/5 = around 21.6</output>

<gadget id="calculator">1_200 + (108/5)</gadget>
<output>6_108/5 = around 1_221.6</output>

<result>6_108/5 = around 1_221.6</result>