A rectangular piece of land is leaning against a wall, and a fence is used to enclose a rectangular piece of land with a length of 50 meters and a width of 25 meters. What is the shortest length of the fence?
一块长方形地靠着一面墙，用篱笆围一个长50米，宽25米的长方形地，篱笆最短多少米？
<gadget id="calculator">25 * 2</gadget>
<output>50</output>

<gadget id="calculator">50 + 50</gadget>
<output>100</output>

<result>100</result>