The original price of a commodity is 618 yuan, but it is 309 yuan after the price reduction. After the price reduction, what percentage of the original price will the product be sold?
一件商品原来售价618元，降价后为309元．降价后的商品按原价的百分之几出售？
<gadget id="calculator">309 / 618</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>