The worker uncle erected a 10-meter-long telegraph pole and wanted to bury (1/5) of it in the ground. How much of it is on the ground?
工人叔叔立一根10米长的电线杆，要将它的(1/5)埋在地下，地面上有几分之几？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>