There is a batch of cement on the construction site, which can be transported in 3 days with 2 trucks, 6 days with 3 small trucks, and 8 days with 9 small trucks. How many days will it take to use 1 truck, 2 small trucks and 4 small trucks for two days, and then use 3 small trucks for transportation?
工地上有一批水泥，如用2辆卡车3天可以运完，用3辆小货车6天可以运完，用9辆小板车8天可以运完．现在用l辆卡车、2辆小货车和4辆小板车共同运两天后，全改用3辆小货车运，还需要多少天？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 72</gadget>
<output>1/72 = around 0.013889</output>

<gadget id="calculator">(1/72) * 3</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">(1/3) / (1/24)</gadget>
<output>8</output>

<result>8</result>