Arithmetic operators

Addition
Subtraction
Multiplication
Division
Floor Divide
Modulo
Power
Bitwise AND
a + b
a - b
a * b
a / b
a // b
a % b
a ^ b
a & b

Note: // can be used in $calc but not /var. & can be used in /var but not $calc

See also /set, /var, $calc, $calcint.