How to EDIT TEXT without editting text background?

[tempmember]

Hi,
I am using online based versions of photoshop such as few tools found here:

https://www.google.com/?gws_rd=cr&ei=DBw1VpvGA4P5ywOsypiADg&fg=1#q=photoshop+online

example:

https://pixlr.com/editor/

I have an image file in jpeg. There are several areas on this image file. Would like to change only one digit number on two different areas. However the problem is the background - there is very important background all over the image which must remain 100% untouched. Obviously those two areas have the background too. As said, in total, would like to change only two digits numbers: one in each of two areas. The style of fonts (color, size, font type, etc) of new text (new digit number) must be 100% identical as the old existing one. Would appreciate a lot if anyone would show me some video or step by step tutorial how to do that. Tried the following:

https://www.youtube.com/watch?v=d6VoCQUmtTw

but because of background, this method cannot be used on web version of photoshop. Due to importance, I have to repeat again that background must remain untouched. Don't have photoshop based file extension. Just jpeg.

Thanks a lot in advance.

 

[Tom Mann]

Can you post a copy of the image that needs to be changed. There are so many possibilities, that it's difficult to recommend a course of action without seeing it.

Tom M

 

[tempmember]

Thank you for reply. Actually I am rather than entire image, pasting just relevant two areas:

 

[Tom Mann]

There's not enough pixels (ie, resolution) in the image you just posted. We also need to see much more of the surroundings to know how to blend them in.

Tom M