The sequence in which expressions are evaluated depends on priority-rules and the grouping of the expression. The math-rules of assoziations and Kommutativit„t (don't know the english term) are only true for those operators which are really assoziativ and Kommutativ. If not defined elsewhere, the sequence of evaluation of an expression is undefined.

Whan I was a callan, I took the play to mysel' for a week, or maybe twa, and gaed wi' a frien' i' the same trade's mysel', to see what was to be seen alang a screed o' the seacoast, frae toon to toon.

Surgery left him spleenless, not spineless.

Would it were not! for I cannot hide / From my heart my growing autophoby.