During the National Day period, a store has a 5% discount on the whole site. A commodity is 18 yuan cheaper than the original price. How much is the original price of this commodity?
国庆期间，某商店全场九五折优惠．一件商品比原价便宜了18元，这件商品原价是多少元？
<gadget id="calculator">95 / 100</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">1 - (19/20)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">18 / (1/20)</gadget>
<output>360</output>

<result>360</result>