Dad deposited 20,000 yuan in the bank in January last year for two years. If the annual interest rate is 2.5%, how much interest can you get when it matures?
爸爸去年一月份把20000元存入银行，定期二年，如果年利率是2.5%，到期时可得利息多少元．
<gadget id="calculator">2.5 / 100</gadget>
<output>0.025</output>

<gadget id="calculator">20_000 * 0.025 * 2</gadget>
<output>1_000</output>

<result>1_000</result>