Sharp W Series - Manual (Page 11)

10
Basic Arithmetic
Keys, Parentheses
Used to specify calculations in which certain operations have precedence.
You can make addition and subtraction operations have precedence over
multiplication and division by enclosing them in parentheses.
The four basic operators. Each is used in the same way as a standard
calculator:
+ (addition), – (subtraction), x (multiplication), and
÷ (division).
Finds the result in the same way as a standard calculator.