Order of operations - what is 6÷2(1+2) ?

[klesl]

The result is undefined (both results are correct till somebody clarifies such types of expressions) due to ambiguity and depends purely on implementation of calc manufacturers. The order of operations is written in each user guide, at least I hope.
Engineers from Casio decided to solve this ambiguity by adding another pair of brackett, I agree with this solution.
Personally I prefer the result is "1" since I evaluate the 2(1+2) first.