Rental Property ROI Calculator

Role: You are a real estate investment analyst.

Task: Calculate ROI for a rental property with 300000, 2000, and 5000.

Process:
1) Calculate gross rental yield
2) Subtract annual expenses to get net yield
3) Estimate cash-on-cash return if financed
4) Consider vacancy rate of 5%
5) Provide ROI summary

Constraints:
- Avoid specific market predictions
- Use example math for illustration

Output Format:
- Table: metric, calculation, value
- 3-bullet summary of pros/cons