So if you have an unfair coin, if you know for a fact that you have an unfair coin, if that is a given, you have a 36% chance of getting two heads in a row. Now, if you want to know the probability of this whole series of events, the probability that you picked an unfair coin and you get two heads in a row, so the probability of unfair and two heads in a row, given that you had that unfair coin, you would multiply this 3 8ths times the 0.36. So this will be equal to the 3 8ths times 0.36. And so let's get a calculator out and calculate these. So if I take 5 divided by 8 times 0.25, I get 15 point, or I'll just write it as a decimal, 0.15625. So this is equal to 0.15625. And then if I do the other part, so if I have 3 divided by 8 times 0.36, that gives me 0.135.