Before the summer vacation, if each person borrows 4 books, 2 books will be missing in the end; if the first 2 people borrow 8 books, and the remaining 3 books are borrowed by each person, these books will just be exhausted. Ask how many books there are.
暑期前借图书，如果每人借4本，则最后少2本；如果前2人借8本，余下每人借3本，这些图书恰好借完．问共有书多少本．
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">8 - 6</gadget>
<output>2</output>

<gadget id="calculator">2 + 2</gadget>
<output>4</output>

<gadget id="calculator">4 - 3</gadget>
<output>1</output>

<gadget id="calculator">4 / 1</gadget>
<output>4</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">16 - 2</gadget>
<output>14</output>

<result>14</result>