Li Jun and Wang Liang ran along the roads around the reservoir. They started from the same place at the same time and went in opposite directions. Li Jun's speed was 225 m/min, and Wang Liang's speed was 245 m/min. After 18 minutes, they met. How long is the road around the reservoir?
李军和王亮沿着水库四周的道路跑步，他们从同一地点同时出发，反向而行，李军的速度是225米/分，王亮的速度是245米/分，经过18分钟两人相遇．水库四周的道路长多少米？
<gadget id="calculator">225 + 245</gadget>
<output>470</output>

<gadget id="calculator">470 * 18</gadget>
<output>8_460</output>

<result>8_460</result>