If I discovered a "Theory of Everything" and I told a computer to run a simulation in accordance to this theory, what would the computer be producing?

So if the theory is correct, what this computer is generating is a simulated universe. However WHAT is happening here? Is the computer simply calculating various ratios/numbers and how they interact with each other?

If so then by extension can our universe not be viewed in the same way? That everything can be deconstructed into an area in space with certain values (numerically), values that are affected by some things, but not by others. (sorry for the horrible articulation there)

EDIT: For clarification, I'm not asking the computer to predict anything. I just want it to run a simulation that behaves exactly like our universe does.