road is 400 kilometers long. A road repair team has been repairing it for 20 days, and there are still 40 kilometers left to be completed. How many kilometers does the road repair team repair on average every day?
一条公路长400千米，一个修路队修了20天，还剩40千米没有修完，这个修路队平均每天修路多少千米？
<gadget id="calculator">400 - 40</gadget>
<output>360</output>

<gadget id="calculator">360 / 20</gadget>
<output>18</output>

<result>18</result>