The above is a link to an article on Lew Rockwell.
This is a recent viral math problem.
There are two claimed answers, 16 & 1.
The correct answer is 1.
You start with the portion of the equation in the parentheses first, than multiple that by the number adjoining the parentheses. Then finally you do the division.
What throws most people is that the correct order goes right to left, rather than the more intuitive left to right.
(8÷2)(2+2) would be equal to 16.
8÷2(2+2) is equal to 1.