After transporting part of the pile of yellow sand, there are 36 tons left, which is the original (1/5). If there are 60 tons left, it is the original ((())/(())).
一堆黄沙运走一部分后，剩下36吨，是原来的(1/5)．如果剩下60吨，是原来的((())/(()))．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">36 / (1/5)</gadget>
<output>180</output>

<gadget id="calculator">60 / 180</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>