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Kevin purchases 1,000 shares of Bluebird Corporation stock on October 3, 2018, for $300,000. On December 12, 2018, Kevin purchases an additional 750 shares of Bluebird stock for $210,000. According to market quotations, Bluebird stock is selling for $285 per share on 12/31/18. Kevin sells 500 shares of Bluebird stock on March 1, 2019, for $162,500. What is the adjusted basis of Kevin?