"Suppose you are long $10$ shares of a stock and assume that the stock pays $$5$ dividend per share at $T($and nothing in between$).$ If the stock price at T $($S$\_$T$)$ is $$100,$ how much is the payoff at T$?$

Write the payoff function as $A+B^{**}{S}_{-}T,$ what is $A?$

What is B$?$