So if we have a very high Km value, what that means is that active side is not very likely to bind onto that substrate. But if the Km value is low, that means there will be a very good binding that takes place between the substrate and that particular active side. So if we take a look at the following ratio a very high Km value basically means this ratio will be small. And so the velocity, the rate of that reaction will be small. And that makes sense, because if Km is small, that means the substrate is not going to bind very well to that active side. And if it can't bind well, it will not spend long enough time to basically be catalyzed into that product.