A pile of goods is transported away in 3 days (1/3), according to this calculation, how many days will it take to transport the rest.
一堆货物3天运走(1/3)，照这样计算，剩下的还需多少天运完．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

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

<gadget id="calculator">(2/3) / (1/9)</gadget>
<output>6</output>

<result>6</result>