Mr. Li bought 3 badminton rackets and 2 table tennis rackets at a sporting goods store. Each pair of table tennis rackets costs 20 yuan. After paying 100 yuan, he got 6 yuan back. How much is the price of each badminton racket? (solution by equation)
李老师到体育用品店买了3副羽毛球拍和2副乒乓球拍，每副乒乓球拍售价20元，付出100元，找回6元，每副羽毛球拍的售价是多少元？(用方程解)
<gadget id="calculator">2 * 20</gadget>
<output>40</output>

<gadget id="calculator">100 - 40 - 6</gadget>
<output>54</output>

<gadget id="calculator">54 / 3</gadget>
<output>18</output>

<result>18</result>