|Enter the following in column A:|
A1 ="Excel" (include the = sign in the cell)
A2 to A10 numbers 1 to 9
A12 =LEFT(A1,A10-A8) & CHAR(A11-A2) & RIGHT(A1,SUM(A2:A3))
Right click A12, select copy
Right click B1 and select Paste Special...then 'Values' and 'OK'
B1 contains the required result.