Grandma Wang deposits 20,000 yuan in the bank for one year, and the interest rate is 2.25%.
王奶奶在银行存款20000元，存定期一年，利率是2.25%，到期她可以获得利息多少元．
<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</output>

<gadget id="calculator">20_000 * 0.0225 * 1</gadget>
<output>450</output>

<result>450</result>