A pencil is 1.5 yuan, and a pen is 4.8 yuan more expensive than a pencil. How much does it cost to buy a pencil and a pen?
一支铅笔1.5元，一支钢笔比一支铅笔贵4.8元，买一支铅笔和一支钢笔一共需要多少钱？
<gadget id="calculator">1.5 + 4.8 + 1.5</gadget>
<output>7.8</output>

<result>7.8</result>