The current price of a refrigerator is 4,500 yuan, which is 500 yuan cheaper than before. How much is the price of this refrigerator reduced?
一款冰箱的现价是4500元，比原来便宜了500元．这款冰箱降价了百分之几？
<gadget id="calculator">4_500 + 500</gadget>
<output>5_000</output>

<gadget id="calculator">500 / 5_000</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>