The altitude of Mount Everest is 8844m above sea level, and the height of Turpan Basin is 155m below sea level, so how much is the difference between the highest point of Mount Everest and the lowest point of Turpan Basin?
珠穆朗玛峰的海拔高度为海平面以上8844m，吐鲁番盆地的高度为海平面一下155米，则珠穆朗玛峰的最高点和吐鲁番盆地的最低点相差多少．
<gadget id="calculator">8_844 + 155</gadget>
<output>8_999</output>

<result>8_999</result>