The construction company plans to build a tunnel. When (1/3) of the task was completed, the company introduced new equipment, the construction speed increased by 20%, the daily working hours were shortened to 80% of the original, and the task was actually completed in 185 days. If according to the original plan, how many days can the task be completed.
建筑公司计划修一条隧道．当完成任务的(1/3)时，公司引进新设备，修建速度提高了20%，每天的工作时间缩短为原来的80%，实际185天完成了任务．若按原计划，则多少天可完成任务．
<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">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(6/5) * (4/5)</gadget>
<output>24/25 = around 0.96</output>

<gadget id="calculator">(2/3) / (24/25)</gadget>
<output>25/36 = around 0.694444</output>

<gadget id="calculator">(1/3) + (25/36)</gadget>
<output>37/36 = around 1.027778</output>

<gadget id="calculator">185 / (37/36)</gadget>
<output>180</output>

<result>180</result>