16.427534,99.518494
https://www.hk01.com/%E5%8D%B3%E6%99%82%E5%9C%8B%E9%9A%9B/1080691/%E7%AB%8B%E9%99%B6%E5%AE%9B%E5%A4%96%E4%BA%A4%E9%83%A8-%E5
凡事要有B計劃，起碼應對到
24,064KM-3KM=24,061KM