Wang Ying is a mountaineering enthusiast. On Sunday, a few friends met to climb the mountain together. The altitude at the foot of the mountain is 250 meters. At 8 o'clock in the morning, we had already climbed to 480 meters above sea level, so we took a short rest and went up another 180 meters. At this time, a strong wind suddenly blew up. For safety, I had to go up another -150 meters to reach a safe place. How many meters above sea level is this safe place?
王莹是一名登山爱好者，周日几个好友相约一起登山，山脚下海拔高度为250米．早上8点时已经登到海拔480米处，于是稍作休息，又向上行进了180米．此时天突然刮起大风，为了安全，只好再向上行进了-150米，到达一个安全地点，此安全地点海拔多少米？
<gadget id="calculator">560 - 150</gadget>
<output>410</output>

<result>410</result>