1)
What do we learn from "veha'Leviyim Le'umas Gevul ha'Kohanim"?
1.
Rashi: It is by the Kohanim's strip, corresponding to its entire length.
2.
Malbim: Also the Leviyim will have a strip like this, 25,000 long and 10,000 wide.
2)
What do we learn from "Kol Orech?"?
1.
Rashi: All the strips were 25,000 long.
2.
Malbim: The Leviyim will have the entire length of 25,000 and width, unlike the Kohanim, for 500 [by 500] Kanim will be taken from the Kohanim for the Mikdash.