shopping mall pays business tax at 5% of the turnover, and the business tax paid last month was 310,000 yuan. How much is the monthly turnover.
某商城按营业额的5%缴纳营业税，上个月缴营业税31万元．该月的营业额是多少元．
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">31 / (1/20)</gadget>
<output>620</output>

<result>620</result>