It costs 0.5 yuan more to buy 5 pencils than to buy 1 ballpoint pen. Each ballpoint pen costs 4.5 yuan. How much is each pencil?
买5支铅笔比买1支圆珠笔多花0.5元，每支圆珠笔4.5元，每支铅笔多少元？
<gadget id="calculator">4.5 + 0.5</gadget>
<output>5</output>

<gadget id="calculator">5 / 5</gadget>
<output>1</output>

<result>1</result>