Aunt Wang's monthly labor remuneration is 1,800 yuan. According to regulations, the part after deducting 800 yuan is taxed at a rate of 20%. How much tax should Aunt Wang pay?
王阿姨一个月劳动报酬1800元．按规定减去800元后的部分按20%的税率缴纳税款，王阿姨应缴纳多少税款？
<gadget id="calculator">1_800 - 800</gadget>
<output>1_000</output>

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

<gadget id="calculator">1_000 * (1/5)</gadget>
<output>200</output>

<result>200</result>