AA3的公式：
=IF(LEN(CONCATENATE($A3,$B3,$C3,$D3,$E3,$F3,$G3,$H3,$I3,$J3,$K3,$L3,$M3)-CONCATENATE($N3,$O3,$P3,$Q3,$R3,$S3,$T3,$U3,$V3,$W3,$X3,$Y3,$Z3))>(COLUMN($M3)-COLUMN(A3)),TEXT(MID(TEXT(CONCATENATE($A3,$B3,$C3,$D3,$E3,$F3,$G3,$H3,$I3,$J3,$K3,$L3,$M3)-CONCATENATE($N3,$O3,$P3,$Q3,$R3,$S3,$T3,$U3,$V3,$W3,$X3,$Y3,$Z3),"0000000000000"),COLUMN(A1),1),"0"),"")
向右填充，再整個向下填充