省到水電：Bal b/f TW$8,030+TW$365=TW$8,395 Bal c/f
https://www.chaincatcher.com/zh-tw/article/2162219
https://tw.news.yahoo.com/%E6%8B%90%E7%B6%81%E8%B1%AC%E4%BB%94%E6%96%B0%E6%83%A1%E6%8B%9B-%E8%A9%90%E5%9C%98%E8%AA%98%E8%B3%
https://topick.hket.com/article/3886969/%E6%9F%AC%E5%9F%94%E5%AF%A8KK%E5%9C%92%E5%8D%80%EF%B8%B1%E5%A4%A7%E9%A6%AC%E8%80%81%
Bal b/f TW$39+TW$3=TW$42 Bal c/f