If the monthly interest rate of a three-year deposit is 0.25%, what is the annual interest rate of this deposit?
三年存款的月利率为0.25%，则这种存款的年利率为多少．
<gadget id="calculator">0.25 / 100</gadget>
<output>0.0025</output>

<gadget id="calculator">0.0025 * 12</gadget>
<output>0.03</output>

<result>0.03</result>