A product is priced at 180 yuan after a 10% price reduction. What is the original price of this product?
一件商品，降价10%后售价是180元，这件商品的原价是多少元？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">180 / (9/10)</gadget>
<output>200</output>

<result>200</result>