Uncle Wang earned 2,000 yuan from one-time labor service remuneration, and the part after deducting 800 yuan was subject to personal income tax at a rate of 20%. How much tax should he pay?
王叔叔一次劳务报酬所得2000元，按规定减去800元后的部分按20%的税率缴纳个人所得税．他应纳税多少元？
<gadget id="calculator">2_000 - 800</gadget>
<output>1_200</output>

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

<gadget id="calculator">1_200 * (1/5)</gadget>
<output>240</output>

<result>240</result>