"Celebrity Stories Collection" has 9 volumes, and the price is 75.6 yuan. How much is the average price per book.
《名人故事集》共9本，售价是75.6元．平均每本售价多少元．
<gadget id="calculator">75.6 / 9</gadget>
<output>8.4</output>

<result>8.4</result>