$1.$Mike Jackson purchased a put option on British pounds for $$0\mathrm{.}04$ per unit. The strike price was $$1\mathrm{.}80,$ and the spot rate at the time the option was exercised was $$1\mathrm{.}59.$

$(1)$ What was Mike$$s net profit or loss on the put option per unit?

$(2)$ What was the break$-$even point on the put option per unit?

$(3)$ What was the seller$$s net profit or loss on the put option per unit?

$(4)$ Draw the contingency graph for the buyer and the seller, showing the strike price, break$-$even point, and put option premium.