If i would have $20 billion to save the world, my plan is to give it to the people who really need it. I mean who have no food, and i would give it to the people in my country to fix there houses after the war. I will give it to the people who has Debt. I will give it to the people who really need it to help their parents in the hospital. I will never leave them without me helping them. That's the best way and idea and plan to save the world. So nobody will be stay without food or without houses. That's not enough money but at least i can help of the people.