B1单元格输入公式
=right(0&sum(mod(mid(a1,{2,1,3},1)+mid(a1,{3,2,1},1),10)*10^{2,1,0}),3)
或
=right(0&-sum(right(mmult({1,1},-mid(a1,{2,1,3;3,2,1},1)))*10^{2,1,0}),3)
=--(RIGHT(MID(A1,2,1)+MID(A1,3,1),1)&RIGHT(MID(A1,1,1)+MID(A1,2,1),1)&RIGHT(MID(A1,1,1)+MID(A1,3,1),1))
=MOD(MID(A1,3,1)+MID(A1,2,1),10)&MOD(MID(A1,2,1)+MID(A1,1,1),10)&MOD(MID(A1,1,1)+MID(A1,3,1),10)
=RIGHT(MID(A1,2,1)+RIGHT(A1))&RIGHT(LEFT(A1)+MID(A1,2,1))&RIGHT(LEFT(A1)+RIGHT(A1))