Two engineering teams, A and B, are working together to build a canal. After A's engineering team first repaired 4500m, B's engineering team repaired (3/7) of this canal, leaving 2000m. How many meters is this canal?
甲、乙两个工程队合修一条水渠，甲工程队先修了4500m后，乙工程队修了这条水渠的(3/7)，还剩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>