A rectangular vegetable field is 39 meters long and 14 meters longer than it is wide. A fence should be built around the vegetable field. How long is the fence?
一个长方形菜地，长39米，长比宽多14米，要在这个菜地四周围上一圈篱笆，篱笆长多少米？
<gadget id="calculator">39 - 14</gadget>
<output>25</output>

<gadget id="calculator">39 + 25</gadget>
<output>64</output>

<gadget id="calculator">64 * 2</gadget>
<output>128</output>

<result>128</result>