Excel表格驗證身份證號輸入規範

=IF(COUNTBLANK(C3),"",IFERROR(IF(LOOKUP((LEFT(C3,1)*7+MID(C3,2,1)*9+MID(C3,3,1)*10+MID(C3,4,1)*5+MID(C3,5,1)*8+MID(C3,6,1)*4+MID(C3,7,1)*2+MID(C3,8,1)+MID(C3,9,1)*6+MID(C3,10,1)*3+MID(C3,11,1)*7+MID(C

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