Teacher Wang plans to use 100 yuan to buy some stationery as prizes for outstanding student cadres. He first bought 6 notebooks with 65.4 yuan, and the remaining money is going to buy 5 pens, so how much must the unit price of the pen be controlled within?
王老师计划用100元钱买一些文具作为奖品奖给优秀学生干部．他先用65.4元买了6个笔记本，剩下的钱准备买5支钢笔，那么钢笔的单价必须控制在多少钱以内？
<gadget id="calculator">100 - 65.4</gadget>
<output>34.6</output>

<gadget id="calculator">34.6 / 5</gadget>
<output>6.92</output>

<result>6.92</result>