To pave a road, 3 people can pave 180 meters in 5 days. According to this speed, 240 people can finish paving in 80 days. Now due to work needs, (1/6) of the number of people has been transferred, and the daily work efficiency has increased (1 /3), so that all the paving can be completed a few days in advance?
铺一条公路，3人5天可铺180米，照这样的速度，240人80天才能铺完，现在由于工作需要，调走人数的(1/6)，而每天的工作效率提高了(1/3)，这样可提前几天全部铺完？
<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<gadget id="calculator">180 / 15</gadget>
<output>12</output>

<gadget id="calculator">12 * 240 * 80</gadget>
<output>230_400</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">240 * (5/6)</gadget>
<output>200</output>

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

<gadget id="calculator">1 + (1/3)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">12 * (4/3)</gadget>
<output>16</output>

<gadget id="calculator">230_400 / 200 / 16</gadget>
<output>72</output>

<gadget id="calculator">80 - 72</gadget>
<output>8</output>

<result>8</result>