The original price of a coat is 620 yuan, and the merchants hold activities on New Year's Day, and sell it at a 15% discount. How much does it cost to buy this coat at this time?
一件外套原价620元，元旦节商家搞活动，八五折出售，这时买这件外套需要多少钱？
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">620 * (17/20)</gadget>
<output>527</output>

<result>527</result>