Or the probability of getting the fair coin, which is 1 4th chance, times the probability and getting four heads in a row is going to be 1 4th times all of this. So it's going to be 1 4th times, this is just 0.5 times itself, four times. So that's 0.5 to the fourth power. So let's get the calculator out to calculate either one of these. So we get 3 divided by 4 times, and it knows that when I do the multiplication, it's not in the denominator here. So it's 3 4ths times, and I'll just do it in parentheses, which I don't have to do in parentheses because it knows order of operation. So 0.55 to the fourth power is equal to 0.