Two engineering teams, A and B, repair a road. After a period of time, A has repaired 35%, and B has repaired 20%. A and B have repaired a total of 220 kilometers. How many kilometers is this road in total?
甲、乙两个工程队修一条路，一段时间后，甲修了35%，乙修了20%，甲乙共修了220千米，这条路总共有多少千米？
<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

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

<gadget id="calculator">(7/20) + (1/5)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">220 / (11/20)</gadget>
<output>400</output>

<result>400</result>