Mr. Li deposits 3,000 yuan in the bank for a period of 2 years. After the expiration, how much can Mr. Li get back together with the principal? (Annual interest rate 2.87%)
李老师把3000元存入银行，定期2年，到期后李老师连同本金一共能取回多少钱？(年利率2.87%)
<gadget id="calculator">86.1 * 2</gadget>
<output>172.2</output>

<gadget id="calculator">3_000 + 172.2</gadget>
<output>3_172.2</output>

<result>3_172.2</result>