Mr. Zhang deposits 4,500 yuan in the bank, the annual interest rate is 2.25%, and 20% interest tax is deducted. How much will the principal and interest be recovered after one year?
张老师到银行存款4500元，年利率是2.25%，扣除20%利息税，一年后取回本息多少元？
<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</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">4_500 * 0.0225 * 1 * (4/5)</gadget>
<output>81</output>

<gadget id="calculator">4_500 + 81</gadget>
<output>4_581</output>

<result>4_581</result>