On January 1, 2009, Breonna owed $12,960 to her friend Recardo, who was kind enough not to charge Breonna any interest. Each month during 2009, Breonna paid Recardo some of the money she owed. If Breonna still owed Recardo $5,724 on January 1, 2010, what was the average amount of Breonna's monthly payments?

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