Divide a 4-meter-long iron wire into 5 sections on average, the length of each section is the total length ((())/(())), how many kilometers is each section?
把4米长的铁丝平均分成5段，每段的长度是全长的((())/(()))，每段长多少千米．
<gadget id="calculator">1 / 1_250</gadget>
<output>1/1_250 = around 0.0008</output>

<result>1/1_250 = around 0.0008</result>