A certain factory pays 8 million yuan in taxes every year, and the annual sales volume is 160 million yuan. What tax rate does this factory pay taxes on?
某家工厂每年上缴税款800万元，每年的销售额是1.6亿元，这家工厂是按多少的税率缴纳税款的．
<gadget id="calculator">1.6 * 10_000</gadget>
<output>16_000</output>

<gadget id="calculator">800 / 16_000</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(1/20) * 1</gadget>
<output>1/20 = around 0.05</output>

<result>1/20 = around 0.05</result>