Last month, the turnover of the store run by Dad was 10,000 yuan, and the business tax rate is 5%. How much tax does Dad have to pay?
爸爸经营的商店上月的营业额是10000元，营业税的税率是5%，爸爸要纳税多少元．
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">10_000 * (1/20)</gadget>
<output>500</output>

<result>500</result>