A rectangular piece of land is 215 meters long and 40 meters wider than it is wide. What is the perimeter of the piece of land in meters?
一块长方形土地长215米，比它的宽多40米，这块地的周长是多少米？
<gadget id="calculator">215 - 40</gadget>
<output>175</output>

<gadget id="calculator">215 + 175</gadget>
<output>390</output>

<gadget id="calculator">390 * 2</gadget>
<output>780</output>

<result>780</result>