print cell formula values step by step

[SMM]

Hello,

I hope someone can help me.
I need to print the step by step values of a formula in a cell

for example lets say: cells(A,3)= Cells (A,1) + Cells (A,2)
If cells(A,1) = 5 and Cells(A,2) = 3
I need to print in Cells(A,3) :"=5+3=8"

I know this is possible but i dont know how

Thanks

[Cheeky Charlie]

="=" & a1 & "+" & a2 & "=" & a1+a2

hth

[SMM]

Much appreciated Charlie

it works nice and easy