Meaning of "the ease with"

Dear Sirs

Can you explain to me what does it mean of the ease with something and can u give me an example of it?

Thanks so much for your help

The ease is the absence of difficulty: he can do it with ease.

As with ‘difficulty’, you can use the preposition ‘of’: the ease of maintenance of a product, for example.

The phrase the ease with can be used in sentences like:the ease with which she can speak about these things is amazing.