Xiao Zhou deposits 2,000 yuan of New Year's money in the bank. The annual interest rate is 2.25%, and the interest tax is 20%. After one year, how much after-tax interest can Xiao Zhou get from the bank.
小周将2000元的压岁钱存入银行，年利率是2.25%，利息税是20%，一年后小周可从银行取得税后利息多少元．
<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</output>

<gadget id="calculator">2_000 * 0.0225 * 1</gadget>
<output>45</output>

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

<gadget id="calculator">45 * (1/5)</gadget>
<output>9</output>

<gadget id="calculator">45 - 9</gadget>
<output>36</output>

<result>36</result>