Xiao Li bought 10 pencils and 8 exercise books, and paid a total of 29.64 yuan. Knowing that each pencil is 1.3 yuan, how much is each exercise book? (Solved by two methods of arithmetic and equation)
小李买了10枝铅笔和8本练习本，共付29.64元，已知每枝铅笔1.3元，每本练习本多少元？(用算术和方程两种方法解)
<gadget id="calculator">1.3 * 10</gadget>
<output>13</output>

<gadget id="calculator">29.64 - 13</gadget>
<output>16.64</output>

<gadget id="calculator">16.64 / 8</gadget>
<output>2.08</output>

<result>2.08</result>