City engineers are considering several plans for building municipal aqueduct tunnels. They use an interest rate of 7 percent. One plan calls for a full capacity tunnel that will meet the needs of the city forever. The cost is $3,000,000 now and $100,000 every 10 years thereafter for repairs. What is the total present worth of the costs of building and maintaining the aqueduct? Click the icon to view the table of compound interest factors for discrete compounding periods when i = 7%. The total present worth is $ (Round to the nearest dollar as needed.)