It takes one month for an engineering team to dig a canal with a length of 8,670 meters. It is known that they dug 3,016 meters in the first ten days and 1,984 meters in the middle. How many meters do you need to dig in the second half of the year if you want to complete the task on time?
一个工程队要用一个月的时间挖一条长8670米的水渠，已知上旬挖了3016米，中旬挖了1984米．要想按期完成任务，下旬需要挖多少米？
<gadget id="calculator">3_016 + 1_984</gadget>
<output>5_000</output>

<gadget id="calculator">8_670 - 5_000</gadget>
<output>3_670</output>

<result>3_670</result>