You purchase 15 call option contracts with a strike price of $85 and a premium of $1.90. Assume the stock price at expiration is $91.45. What is your dollar profit? (Do not round intermediate calculations. Omit the "$" sign in your response.) Dollar profit $ What if the stock price is $77.40? (Negative amount should be indicated by a minus sign. Do not round intermediate calculations. Omit the "$" sign in your response.) If the stock price is $77.40. the call is worthless T so the dollar return is $