I would've said 14, but it appears Down is a much more mathematical person than I. 14 is what a calculator says at least, heh...
Also what the hell is pemdas?
The calculator you're using gives 14 because it's probably of a type that only does single operations as you enter them. A calculator that allows you to type in the whole expression and then calculates it would give 10. Try it in excel, for example. Take a cell, and type in =4+3*2
You'll get 10.
As explained by some of the other posters, PEMDAS is an acronym for the rules for conducting the order of operations.
P: Parentheses. All operations in parentheses are done before operations not in parentheses.
E: Exponents. Resolve all exponents next.
M/D: Multiply/Divide in the order they appear, left to right
A/S: Add/Subtract in the order they appear, left to right
I actually learned it as BEDMAS (brackets instead of parentheses, which is technically wrong since () are parentheses and [] are brackets)