The price of a ballpoint pen is 1.8 yuan, and a fountain pen is 6.5 yuan more expensive than the ballpoint pen. What is the price of the pen?
一支圆珠笔的价格是1.8元，一支钢笔比圆珠笔贵6.5元，钢笔的价格是多少元．
<gadget id="calculator">1.8 + 6.5</gadget>
<output>8.3</output>

<result>8.3</result>