On January 1 this year, Xiaohua deposited the accumulated pocket money of 500 yuan in the bank for three years on a regular basis. Donate the interest to "Hope Project" after the preparation expires. If the annual interest rate is calculated at 5.00%, how much interest can be obtained at maturity? (excluding interest tax)
小华今年1月1日把积攒的500元零用钱存入银行，定期三年．准备到期后把利息捐赠给"希望工程"．如果年利率按5.00%计算，到期可获得利息多少元？(不计利息税)
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">500 * (1/20) * 3</gadget>
<output>75</output>

<result>75</result>