Two projects, A and B, jointly build a canal. After A project team first repaired 4500m, B project team repaired the rest (3/7), leaving 2000m. How many meters is this canal?
甲乙两个工程合修一条水渠，甲工程队先修了4500m后，乙工程队修了剩下的(3/7)，还剩下2000m．这条水渠长多少米？
<gadget id="calculator">4_500 + 2_000</gadget>
<output>6_500</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">1 - (3/7)</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">6_500 / (4/7)</gadget>
<output>11_375</output>

<result>11_375</result>