A road construction team built a road, and every day it repaired 0.4 kilometers more than the whole road (1/60), and it took 50 days to complete the repair. How many kilometers is this road?
某筑路队修筑一条公路，每天修的比全路的(1/60)还多0.4千米，修了50天正好修完．这条公路长多少千米？
<gadget id="calculator">1 / 60</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">(1/60) * 50</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 - (5/6)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">50 / (1/6)</gadget>
<output>300</output>

<gadget id="calculator">0.4 * 300</gadget>
<output>120</output>

<result>120</result>