Xiaoqiang bought 4 pens, and Xiao Lin bought 3 of the same pen, and they spent a total of 14 yuan. How much does a pen cost?
小强买了4支钢笔，小林买了3条同样的钢笔，一共用去了14元钱，一支钢笔用多少元．
<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">14 / 7</gadget>
<output>2</output>

<result>2</result>