A thermometer has two scales, Celsius (°C) and Fahrenheit (°F), and the conversion relationship between them is: Celsius * 180% + 32 = Fahrenheit. In Celsius, it is exactly 86 degrees Fahrenheit.
某温度计有两种刻度，摄氏度(℃)和华氏度(℉)，它们之间的换算关系是：摄氏度*180%+32=华氏度．在摄氏多少度时，恰好是华氏86度．
<gadget id="calculator">86 - 32</gadget>
<output>54</output>

<gadget id="calculator">32 - 32</gadget>
<output>0</output>

<gadget id="calculator">1.8 + 0</gadget>
<output>1.8</output>

<gadget id="calculator">54 / 1.8</gadget>
<output>30</output>

<result>30</result>