The continental glaciers of Greenland in the Arctic Ocean have an area of 1.8 million square kilometers and an ice thickness of 2,300 meters. If all the snow and ice in Greenland melted, the global sea level would rise higher than a second-story building. If all the ice and snow in Antarctica melted, the global sea level would rise by 66 meters, 6 meters more than 8 times that of Greenland. How many meters will sea levels rise if Greenland's ice melts?
北冰洋的格陵兰岛的大陆冰川面积达180万平方千米，其冰层厚度达2300米．如果格陵兰岛冰雪全部消融，全球海平面就会上升比二层楼还要高．如果南极冰雪全部消融，全球海平面就会上升66米，比格陵兰岛的8倍还多6米．如果格陵兰岛冰雪消融，海平面会上升多少米？
<gadget id="calculator">66 - 6</gadget>
<output>60</output>

<gadget id="calculator">60 / 8</gadget>
<output>15/2 = around 7.5</output>

<result>15/2 = around 7.5</result>