On March 1, 2010, Xiaolin deposited his 1,000 yuan lucky money in the bank, and planned to donate the interest earned to the "Hope Project" every year in the future. If the annual interest rate is 2.25%, and the interest tax is 20% of the interest, how much money can Kobayashi donate to the "Hope Project" by March 1 next year?
2010年3月1日，小林把自己的1000元压岁钱存入银行，准备以后每年把所得的利息捐赠给"希望工程"．如果年利率是2.25%，利息纳税额为利息的20%，到明年3月1日，小林可以向"希望工程"捐赠多少钱？
<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</output>

<gadget id="calculator">1_000 * 0.0225 * 1</gadget>
<output>22.5</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">22.5 * (4/5)</gadget>
<output>18</output>

<result>18</result>