There is a rectangular field whose length is 50.5 meters and whose width is 26 meters less than its length. What is the perimeter of this rectangular field in meters?
有一个长方形的地，长50.5米，宽比长少26米，这个长方形地的周长是多少米？
<gadget id="calculator">50.5 - 26</gadget>
<output>24.5</output>

<gadget id="calculator">50.5 + 24.5</gadget>
<output>75</output>

<gadget id="calculator">75 * 2</gadget>
<output>150</output>

<result>150</result>