The engineering team builds a road. After two weeks of repairing, the repaired area accounts for 20% of the total length. If another 50 meters are repaired, the ratio of the repaired to the unrepaired is 2:3. How many meters is this road in total?
工程队修一条路，修了两周后修的占全长的20%，如果再修50米这时已修的和未修的比是2：3，这条路共有多少米？
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

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

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(2/5) - (1/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">50 / (1/5)</gadget>
<output>250</output>

<result>250</result>