Taxation is the duty of every citizen. Uncle Li, who is in the clothing business, had a turnover of 9,800 yuan last month. If he paid business tax at a rate of 5%, how much business tax should Uncle Li pay last month?
纳税是每个公民应尽的义务．做服装生意的李叔叔上月营业额是9800元，如果按5%的税率缴纳营业税，李叔叔上月应缴纳营业税多少元？
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">9_800 * (1/20)</gadget>
<output>490</output>

<result>490</result>