Tina is planning to save money for a property that costs $11 million today, in 20 years time. She currently has 5 million in her bank and she will be receiving an inheritance from her grandparents that can contribute to her income for $300,000 per year starting the beginning of the next year for the following 10 years. How much should she contribute each year starting the 11th year so she can successfully buy the property?

For this problem, assume that the bank interest rate is 12% yearly, compounded annually and the property appreciation rate is 13% yearly.