Suppose you would like to purchase an upscale apartment complex as a real estate investment for rental income. The complex is well-established, and has a useful life as a rental for 25 years. Based on rents earned in the area, you can conservatively expect a before-tax rental income of $750,000/yr. If the property is being sold for $3,000,000 and you want a before-tax return of 25% on your rental property investment, what is the most you would be willing to pay for the property?