The correct answer should be -15.59

Pam currently owns 194 shares of XYZ, which is about to pay a $1.39 per share dividend, and has a cum dividend price of $28. Pam would prefer a $3.64 per share dividend. How many shares of XYZ should she buy or sell, assuming she is selling her shares before the cum dividend date?. Please report buying shares as a positive number, and selling shares as a negative number, and give your answer to the nearest tenth of a share