How can I read the data from text file (.txt) ?

Now i have some data written in text file (.txt).

e.g.:

X  10  Y  20  Z  30

Length  40  Width  50  Height  60

I want to use this data to draw a box in the 3ds max. However, I want the software can read and understand well the text file, so that I don't need to creat an new text file which contains only the integer. How can I do that? Is there any helpful scripts or functions? for example how to skip the letter in the text file when I read the integer ?