A steel mill paid 1.8 million yuan in business tax last year according to regulations, and their tax rate is 5%. What was the turnover of this steel mill last year in ten thousand yuan?
某钢厂去年按规定缴纳了180万元的营业税，他们纳税的税率是5%．这个钢厂去年的营业额是多少万元．
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">180 / (1/20)</gadget>
<output>3_600</output>

<result>3_600</result>