A road construction team builds 20 kilometers of road every day, and (1/3) of the road is built in 3 days. How many days will it take to finish the road?
一个修路队每天修路20千米，3天修了这条路的(1/3)，修完这条路需要多少天？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) / 3</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 / (1/9)</gadget>
<output>9</output>

<result>9</result>