Using the below information, could someone please explain how to find IRR (Not real IRR)

I think it requires an excel program (?) which I do not have.

Is there a way to figure this out if I don't have excel?

The question was: A four yer project requires 1,000,000$ as first cost and brings 2,000,000$ at the end of the 4th year.

If expected annual inflation rate over this period is 5%, what is the REAL IRR of this project?