A railway corps is repairing a section of railway. In the first week, the total length (1/5) is 180 meters longer. In the second week, it is twice as long as the first week. It is just completed. How long is this section of railway?
铁道兵某部修一段铁路，第一周修全长的(1/5)还多180米，第二周修的相当于第一周的2倍，正好修完，这段铁路长多少米？
<gadget id="calculator">180 * 2</gadget>
<output>360</output>

<gadget id="calculator">180 + 360</gadget>
<output>540</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) * 2</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) + (1/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">540 / (2/5)</gadget>
<output>1_350</output>

<result>1_350</result>