I am a retired executive with a Master's Degree in Math.
I am very familiar with Word, especially creating math formulas in Word.
Since I cannot attach a file to my bid, I have placed your Sample 2 in Word Format in my Portfolio. Please have a look.
This bid is for converting 100 of your png files to Word format.
To create the Word formatted document for you, I had to put the png image into Word, print it, scan it, crop it to just have the diagram, then paste the diagram into the word document and size it. Typing the words and formulas was easy.
I would love to work on this project for you.
I can have the 100 pages done within 5 days. If you like my work, I am sure I will get faster at doing this in order to do your 2000+ pages at a more rapid rate.