The price of a pair of badminton rackets is 80 yuan, and it will be sold at a 15% discount on New Year's Day. What is the current price?
一副羽毛球拍的价格是80元，庆元旦打八五折销售，现价多少元．
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">80 * (17/20)</gadget>
<output>68</output>

<result>68</result>