Shopping malls sell seasonal discounts, and all cotton clothes are 15% off. A discounted cotton coat is priced at 170 yuan. How much is this coat?
商场换季打折销售，棉衣一律八五折．一件棉大衣打折后售价170元，原来这件大衣多少元？
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">170 / (17/20)</gadget>
<output>200</output>

<result>200</result>