Li Village built a canal, 2.25 kilometers has been repaired, 0.8 kilometers less than the rest. How many kilometers is this canal?
李村修一条水渠，已经修好了2.25千米，比剩下的少0.8千米．这条水渠长多少千米？
<gadget id="calculator">2.25 + 0.8 + 2.25</gadget>
<output>5.3</output>

<result>5.3</result>