The turnover of a shopping mall in April is 3 million yuan, and there is 2.85 million yuan left after paying taxes. What is the tax rate for paying business tax?
某商场四月份的营业额是300万元，纳税后还剩285万元，缴纳营业税的税率是多少．
<gadget id="calculator">300 - 285</gadget>
<output>15</output>

<gadget id="calculator">15 / 300</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>