Excel Formula Display in Cell

Hello,

I hope someone can help me.

I need to print the step by step values of a formula in a cell

for example ilets 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