The teacher bought 6 pencil boxes for the students as prizes for the athletes. He paid 100 yuan and got 10 yuan back. How much is each pencil box?
老师给同学们买了6个铅笔盒作为运动员奖品，付了100元，找回10元，每个铅笔盒多少钱？
<gadget id="calculator">100 - 10</gadget>
<output>90</output>

<gadget id="calculator">90 / 6</gadget>
<output>15</output>

<result>15</result>