Sichuan famous dish "Couple's Lung Slices", the main ingredients are beef, tripe and beef louver, the unit price is 18 yuan, 28 yuan and 26 yuan per kilogram respectively. Now choose the same weight from each of the three ingredients and mix them into "Husband and wife lung slices", how much should be sold per kilogram.
四川名菜"夫妻肺片"，主要选料有牛肉、牛肚和牛百叶，单价分别是每千克18元、28元和26元．现在三样各选取同样重量拌成"夫妻肺片"，每千克应售多少元．
<gadget id="calculator">18 + 28 + 26</gadget>
<output>72</output>

<gadget id="calculator">72 / 3</gadget>
<output>24</output>

<result>24</result>