The botanical garden has repaired a section of fence, which has been repaired by 40%, which is exactly 80 meters. How many meters is the total length of the fence?
植物园修一段围栏，已经修了40%，正好是80米，围栏全长多少米？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">80 / (2/5)</gadget>
<output>200</output>

<result>200</result>