Season tickets for the Monty are priced at $$400$ and include $20$ home games. An equal amount of revenue is recognized after each

game is played. When the season began, the amount credited to Unearned Ticket Revenue was $$2,200,000.$ By the end of October,

$$1,650,000$ of the Unearned Ticket Revenue had been recognized as revenue.

How many home games had the Monty played by the end of October?

Home games played by Monty