So that tells me the value of what the normal distribution tells me for this situation with this standard deviation and this mean. And then I multiply that by 1, so you don't see that in formula, I don't actually write times 1, to actually figure out the area under the curve, right? Because remember, it's a continuous distribution function like that. This right here just gives me the value. But to figure out the probability of being within a foot of it, I have to multiply it by 1. Or I'm approximating, really. I really should take the integral from there to there, but this little rectangle is a pretty good approximation.