Xiaohua bought 4 picture albums and spent a total of 26.8 yuan. How much is the average price of each book?
小华买了4本画册，共花了26.8元，平均每本售价多少元？
<gadget id="calculator">26.8 / 4</gadget>
<output>6.7</output>

<result>6.7</result>