As far as this question is concerned, I'm not sure if the gradient is all you need. But since you need help finding the gradient, I will help you find it, but I'm afraid I can't contribute much else to this problem. I assume that you need to plug in the point once you find the magnitude, which I did at the end of this problem. Hopefully this helps.

Remember that the gradient is just the partials with respect to x, y, and z, so that:

Now we calculate the individual partial derivatives:

Which gives us a gradient of:

Now we need to know the magnitude of the gradient, which would be given by:

Now you plug in the point you got: