It takes 6 days to build a road (4/5) kilometers long. How many kilometers are repaired on average per day?
修一条长(4/5)千米的路，6天就可以完成，平均每天修多少千米？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) / 6</gadget>
<output>2/15 = around 0.133333</output>

<result>2/15 = around 0.133333</result>