So let's continue using this example. The chain rule here says, look, we have to take the derivative of the outer function with respect to the inner function. So if I were to say, in this case, f of x is natural log of x. f of g of x is this expression here. So if I wanna do this first part, f prime of g of x, f prime of g of x, well, the derivative of the natural log of x is one over x. So the derivative of natural log of x is one over x, but we don't want the derivative where the input is x. We want the derivative when the input is g of x. So instead of it being one over x, it's going to be one over g of x.