1. Download notebook in .html format.

2. Wordpress: 

- Install plugins - file manager and iframe plugins

- upload your notebook to special folder

- in blog add notebook using [iframe src="/linkto .html file for notebook"

- or simply use html element and paste html code into it.

Easiest way to convert .ipynb to .html using google colab
https://gist.github.com/computingnotes/972352162b9570f40cec8ca4da1ddc51