A road construction team needs to build a road with an average of 9 kilometers per day. It started on March 1 this year and will be completed by the end of March. How many kilometers is this road?
一个修路队要修一条路，平均每天修9千米，今年3月1日开始，3月底完工，这条路有多少千米？
<gadget id="calculator">9 * 31</gadget>
<output>279</output>

<result>279</result>