Teacher Wang used some money to buy prizes for the students. You can buy 8 pens and 16 exercise books. Teacher Wang bought 5 pens. How many exercise books can you buy with the remaining money?
王老师用一些钱给学生买奖品，单买钢笔可买8支，单买练习本可买16本，王老师买了5支钢笔，剩下的钱可买多少本练习本？
<gadget id="calculator">8 - 5</gadget>
<output>3</output>

<gadget id="calculator">16 / 8</gadget>
<output>2</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<result>6</result>