Jezekiel 42:8

8 For the length of the chambers looking toward the inner court was fifty cubits, and these are the ones that front the others; the whole was a hundred cubits.

Jezekiel 42:8 In-Context

6 For they were triple, and they had not pillars like the pillars of the outer ones: therefore they projected from the lower ones and the middle ones from the ground.
7 And light without, corresponding to the chambers of the outer court looking toward the front of the northern chambers; the length fifty cubits.
8 For the length of the chambers looking toward the inner court was fifty cubits, and these are the ones that front the others; the whole was a hundred cubits.
9 And doors of these chambers for an outlet toward the east, so that one should go through them out of the outer court,
10 by the opening of the walk at the corner; and the south parts were toward the south, toward the remaining space, and toward the partition, and the chambers.

The Brenton translation of the Septuagint is in the public domain.