A pencil costs 0.90 yuan, and a pen costs 6.50 yuan. How much does it cost to buy a pencil and a pen?
一枝铅笔0.90元，一枝钢笔6.50元．买一枝铅笔和一枝钢笔一共要付多少元？
<gadget id="calculator">0.9 + 6.5</gadget>
<output>7.4</output>

<result>7.4</result>