"New Fairy Tale Collection" has a set of 4 volumes, with a total price of 26.8 yuan. How much is the average price per volume?
《新编童话集》一套共4本，总价26.8元，平均每本售价多少钱？
<gadget id="calculator">26.8 / 4</gadget>
<output>6.7</output>

<result>6.7</result>