https://youtu.be/r1lcxCNxNI0?si=otWrNWf6DtU1QK56
https://youtu.be/Zzyfcys1aLM?si=VHEvPZYNhO3bIuli
省到水電：Bal b/f TW$27,740+TW$365=TW$28,105 Bal c/f
Bal b/f 582 Tempos+7 Tempos=589 Tempos Bal c/f
https://youtu.be/cr0vF4GgIDk?si=VPuTZiSmYv29JfGO