We will here point out that arithmetic expressions are written as fully parenthesized expressions with prefix notation
Scheme uses fully parenthesized arithmetic expressions with prefix notation
Prefix notation stands as a contrast to infix and postfix notation. Infix notation is 'standard notation' in which the operand is found in between the operands.
Examples of arithmetic expressions. The prefix notation can be seen to the left, and the values of the expressions appear to the right.
There is no need for priorities - operator precedence rules - of operators in fully parenthesized expressions