A certain engineering team wants to build a road. It has completed the full length (1/4) in the first week, and the full length (1/5) in the second week. There are still 220 kilometers left to be completed. What is the total length of this road? km?
某工程队要修一条公路，第一周修了全长的(1/4)，第二周修了全长的(1/5)，还剩220千米没修完，这条公路全长有多少千米？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">1 - (1/4) - (1/5)</gadget>
<output>11/20 = around 0.55</output>

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

<result>400</result>