What is the gauge length in meters if 6 poles are placed on average at a distance of 100 meters?
把6根标杆平均立在100米的距离上，标距是多少米．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">100 / 5</gadget>
<output>20</output>

<result>20</result>