An engineering team built a canal and built 1800 meters in 4 days. According to this calculation, it will take another 3 days to complete the repair. How many meters is this canal?
一个工程队修一条水渠，4天修了1800米．照这样计算，再修3天才能修完．这条水渠长多少米？
<gadget id="calculator">1_800 / 4</gadget>
<output>450</output>

<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">450 * 7</gadget>
<output>3_150</output>

<result>3_150</result>