On March 1, 2005, Wang Fang deposited 300 yuan of New Year's money into the bank. The lump-sum deposit is withdrawn for 3 years. The annual interest rate is 3.24%. How much is the interest when it matures?
王芳2005年3月1日把300元压岁钱存入银行，整存整取3年，年利率是3.24%，到期时的利息是多少元？
<gadget id="calculator">3.24 / 100</gadget>
<output>0.0324</output>

<gadget id="calculator">300 * 0.0324 * 3</gadget>
<output>29.16</output>

<result>29.16</result>