Mom deposits 20,000 yuan in the bank for one year, and the annual interest rate is 2.25%. After one year, how much yuan should mother get back from the bank.
妈妈存入银行20000元，定期一年，年利率是2.25%，一年后，妈妈应从银行取回多少元．
<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</output>

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

<gadget id="calculator">20_000 + 450</gadget>
<output>20_450</output>

<result>20_450</result>