'Seven and a half' in the Bible

The overall length of the wings of the cherubim was 30 feet: the wing of one was 7½ feet, touching the wall of the room; its other wing was 7½ feet, touching the wing of the other cherub.

The wing of the other cherub was 7½ feet, touching the wall of the room; its other wing was 7½ feet, reaching the wing of the other cherub.

Then he made the cast metal reservoir, 15 feet from brim to brim, perfectly round. It was 7½ feet high and 45 feet in circumference.

For Solomon had made a bronze platform 7½ feet long, 7½ feet wide, and 4½ feet high and put it in the court. He stood on it, knelt down in front of the entire congregation of Israel, and spread out his hands toward heaven.