The turnover of a shopping mall in September is 400,000 yuan. If the business tax is paid at 5% of the turnover, how much is the taxable amount of this shopping mall in September?
某商场9月份的营业额是40万元，如果按营业额的5%缴纳营业税，这个商场9月份应纳税多少万元．
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">40 * (1/20)</gadget>
<output>2</output>

<result>2</result>