7 billion
500
460
42
235/462 x 100 = 50.9% (rounded)
460
1 square meter = 10.764 square feet (rounded) 462 square meters = 4,972.927 square feet (rounded)
It is: 460
500
9000
42, 84, 126, 168, 210, 252, 294, 336, 378, 420, 462, . . .
Oh, dude, the greatest common factor of those numbers is like the biggest number that can divide all of them without leaving a remainder. So, you just gotta find the factors of each number and see which one they all have in common. It's like a math puzzle, but not as fun as a jigsaw puzzle. So, the greatest common factor of 84, 126, 294, and 462 is 42.
42, 84, 126, 168, 210, 252, 294, 336, 378, 420, 462, 504, 546, . . .