Say cell A1 has the formula A2 + A3

and B1 has the formula B2 + B2

and C1 has the formula A1 + B1

I need an easy and quick way to create the formula for C1 in the flattened state..

i.e. (A2 + A3) + (B1 + B2)

Although the above example is trivial, I am trying to simplify a formula that refers to around 40 cells (and around 70 calls through a third party plugin).

Any help appreciated!