To build a road, the full length (2/5) was built in the first week, and 80 meters in the second week. At this time, the ratio of the repaired road to the total length is 4:5. How many meters is the total length of this road?
修一条路，第一周修了全长的(2/5)，第二周修了80米，这时已修的与全长的比是4：5，这条路全长多少米？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(4/5) - (2/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">80 / (2/5)</gadget>
<output>200</output>

<result>200</result>