On January 10, 2013, Uncle Wang deposited 30,000 yuan in the bank for three years. After the maturity, the principal and interest were withdrawn to a total of 33,825 yuan. What was the annual interest rate of Uncle Wang's deposit? (Temporary exemption from interest tax)
2013年1月10日王叔叔将30000元存人银行三年，到期后取出本金和利息共33825元，王叔叔存款时的年利率是多少？(暂免利息税)
<gadget id="calculator">33_825 - 30_000</gadget>
<output>3_825</output>

<gadget id="calculator">3_825 / 3 / 30_000</gadget>
<output>17/400 = around 0.0425</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(17/400) * 1</gadget>
<output>17/400 = around 0.0425</output>

<result>17/400 = around 0.0425</result>