128,994KM-500KM=128,494KM
https://www.google.com/amp/s/news.pts.org.tw/article/701866/amp
https://tw.news.yahoo.com/%E7%8D%A8%E5%AE%B6-37%E6%AD%B2%E5%A5%B3%E4%BF%A1%E7%B6%B2%E5%8F%8B%E5%88%B0%E6%B3%B0%E5%9C%8B%E5%B
省到水電：Bal b/f TW$9,490+TW$365=TW$9,855 Bal c/f
累積第80天省到累積：Bal b/f TW$30,248 +早餐TW$80 +午餐TW$80 +晚餐TW$80 +當天用膳共少於240台幣可得TW$80 +不約人用