When there is more than one operator in an expression, they are evaluated in a set order, known as the order of precedence. The order of precedence, in evaluation order, is as follows:

When operators are at the same level of precedence, they are simply evaluated from left to right.

You can override the order of precedence by using parentheses. Operators that are within parentheses are evaluated before operators that are not contained within parentheses. However, when more than one operator is contained within parentheses, they are evaluated according to the normal order of precedence.