As explained extremely well by Roald Dahl in "Charlie and the Great Glass Elevator".
This step by step process is included in the chapter entitled 'The President'.
1. Bring the chief financial advisor into the Oval Office of the White House.
2. Give him the book full of financial documents.
3. Get him to balance the book on his head.
Easy as Pie.
I can't see what the problem is!
Roald Dahl provided this step by step guide over twenty years ago.
It just goes to show that everyone needs a good literary grounding in life.