20% of the total length of the road was built on the first day, and 70 meters on the second day. The number of meters repaired on the second day was 40% more than that on the first day. How long is the road in meters?
修一段路，第一天修了全长的20%，第二天修了70米，第二天修的米数比第一天多40%，这条路长多少米．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">(1/5) * (7/5)</gadget>
<output>7/25 = around 0.28</output>

<gadget id="calculator">70 / (7/25)</gadget>
<output>250</output>

<result>250</result>