You purchase $27$ call option contracts with a strike price of $$145$ and a premium of $$3\mathrm{.}65.$ Assume the stock price at expira $$157\mathrm{.}40.$

a$.$ What is your dollar profit?

Note: Do not round intermediate calculations.

Dollar profit

b$.$ What is your dollar profit if the stock price is $$143\mathrm{.}35?$

Note: A negative value should be indicated by a minus sign. Do not round intermediate calculations.

If the stock price is $$143\mathrm{.}35,$ the call is

so the dollar profit is