Xiao Ming took 20 yuan to the stationery store to buy homework books. After he bought 5 small exercise books and 2 large exercise books, the remaining money would be 8 cents more if he bought 3 small exercise books. If he bought 3 large exercise books There is still a difference of 1 yuan. How much is each large exercise book.
小明带20元去文具店买作业本，他买了5个小练习本和2个大练习本后，剩下的钱若买3个小练习本还多8角，若买3个大练习本还差1元．每个大练习本多少元．
<gadget id="calculator">5 * 0.6</gadget>
<output>3</output>

<gadget id="calculator">3 + 1 + 20</gadget>
<output>24</output>

<gadget id="calculator">5 + 2 + 3</gadget>
<output>10</output>

<gadget id="calculator">24 / 10</gadget>
<output>12/5 = around 2.4</output>

<result>12/5 = around 2.4</result>