Xiaofang has deposited 280 yuan in current savings in the bank. If the annual interest rate is 0.99%, how much yuan can she get back the principal and interest after depositing for half a year? (Exemption from interest tax)
小芳在银行存了活期储蓄280元，如果年利率是0.99%，存满半年时，可取回本金和利息共多少元？(免征利息税)
<gadget id="calculator">0.99 / 100</gadget>
<output>0.0099</output>

<gadget id="calculator">280 * 0.0099 * 0.5</gadget>
<output>1.386</output>

<gadget id="calculator">280 + 1.386</gadget>
<output>281.386</output>

<result>281.386</result>