Xiaofang and Xiaojuan bought the same exercise book. Xiaofang bought 8 and Xiaojuan bought 5, which cost 4.8 yuan less than Xiaofang. How much is each exercise book? (Solve first with equations, then with arithmetic)
小芳和小娟买同的练习本．小芳买了8本，小娟买了5本，比小芳少花4.8元，每本练习本多少钱？(先用方程解，再用算术方法解)
<gadget id="calculator">8 - 5</gadget>
<output>3</output>

<gadget id="calculator">4.8 / 3</gadget>
<output>1.6</output>

<result>1.6</result>