The Heavenly Jerusalem is 12,000 furlongs in height, width, and length. A furlong is 220 yards, therefore,

Each side is 660 feet times 12,000 feet = 7,920,000 feet (per side) .

One mile is 5,280 feet, so each side is 7,920,000 divided by 5280 feet = 1500 MILES on each side.

1500 X 1500 x 1500 = 3,375,000,000 cubic miles for the whole city .

If each floor is 10 feet high, then, there are 792,000 floors: 1500 miles high * 5280 = 7,920,000 feet high

7,920,000 / 10 feet = 792,000 floors.

If each "mansion" on each floor is 500 feet X 500 feet = 250,000 square feet, and each floor is

1500 * 1500 = 2,250,000 square miles per floor

7,920,000 * 7,920,000 = 62,726,400,000,000 square feet per floor.

62,726,400,000,000 sq ft per floor div by 250,000 sq ft per "mansion" = 250,905,600 "mansions" per floor.

Since there are 792,000 floors and 250,905,600 "mansions" per floor, then,

there are 198,717,235,300,000 "mansions" in "my Father's house."

This means there could potentially be 198 trillion, 717 billion, 235 million, and 300 thousands "mansions" in "my Father's house."

Each of these mansions being 250,000 square feet (Author Unknown)

Get your spare calculator batteries handy,LOL