Two engineering teams, A and B, are digging a canal. A is digging 175 meters a day, and B is digging 125 meters a day. The project is completed in 20 days. How many meters is this canal?
甲、乙两个工程队挖一条水渠，甲每天挖175米，乙每天挖125米，20天正好完工．这条水渠长多少米？
<gadget id="calculator">175 + 125</gadget>
<output>300</output>

<gadget id="calculator">300 * 20</gadget>
<output>6_000</output>

<result>6_000</result>