At noon, Xiaohua took out his own fruit and shared it with his classmates. "Wow, what a beautiful dragon fruit! How much is it per kilogram?" Xiao Ming asked. Xiaohua said, "The apples and dragon fruits I bought are both 2 kilograms. The apples are 6 yuan per kilogram, and the total payment is 22 yuan. You can calculate the unit price of the dragon fruit yourself!"
中午，小华把自己的水果拿出来与同学们分享．"哇，好漂亮的火龙果！多少钱一千克？"小明问．小华说"我买的苹果和火龙果都是2千克，苹果每千克6元，共付22元．火龙果的单价你自己算！"
<gadget id="calculator">22 / 2</gadget>
<output>11</output>

<gadget id="calculator">11 - 6</gadget>
<output>5</output>

<result>5</result>