If a product is sold at 40% off the original price, it is 18 yuan. What is the original price?
某件商品按原价六折卖出是18元，原价是多少元．
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">18 / (3/5)</gadget>
<output>30</output>

<result>30</result>