How can I read some specific data from a web page

There is a website here (http://www.tsetmc.com/Loader.aspx?ParTree=151311&i=46741025610365786#), that each field of this table(specified by yellow squares in second photo) shows information about one specific day. What I need to do is to read only حجم row of each field(I mean what I specified by red squares in the second photo(You should go to the tab i mentioned in first photo, to see the second photo)):

And write them(store in my computer) in a text file like this(I don't need the word 'حجم' to be written:

6.832 M (14%) , 40.475 M (85%), 248,000 (0%), 47.059 M (99%)
605,000 (3%), 15.277 M (96%), 478,714 (3%), 15.404 M (96%)
8.102 M (42%), 10.751 M (57%), 9.599 M (50%), 9.253 M (49%)
215,937 (2%), 9.417 M (97%), 1.115 M (11%), 8.518 M (88%)
3.351 M (15%), 18.284 M (84%), 5.987 M (27%), 15.647 M (72%)

It also would be fantastic for me if M letters in above data changes to 000, I mean 6.832 M for example, be converted to 6832000.

I read an article about web scraping in Matlab, but couldn't understand it! It seems it's a huge specific area and I need read alot more, but this is a part of my ML(machine learning) project in Matlab and I need grab data from web for that.

[Rik]

It is usually the easiest to load the entire web page as an html/json/xml/whatever and extract the data from that. Web pages generally have a lot of structure, so you should be able to find the specific markers that indicate your wanted elements.

[reza]

How can I read the whole page?

[Rik]

websave or webread should do it.