Xiao Ming goes to the bookstore and buys a dictionary for 13.2 yuan, which is 4.7 yuan more expensive than the Junior Encyclopedia. How much more is the Junior Encyclopedia?
小明去书店，买了一本字典用去13.2元，比少年百科全书贵4.7元，少年百科全书多多少元？
<gadget id="calculator">13.2 - 4.7</gadget>
<output>8.5</output>

<result>8.5</result>