The annual interest rate of one-year fixed deposit is calculated at 2.25%. Zhang Ming deposited some money in the bank. After one year expires, he should get 450 yuan in interest. How much did Zhang Ming deposit in the bank?
一年定期存款年利率按2.25%计算．张明在银行存了一些钱，一年到期后，他应得利息450元．张明原来存入银行多少元？
<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</output>

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

<result>20_000</result>