Arithmetic Operators
    + Unary plus (one operand)
- Unary minus (one operand)
+ Addition (two operands)
- Subtraction (two operands)
* Multiplication (two operands)
/     Floating-point division (floating-point result)
Integer division (no fractional part)
% Modulus (remainder from integer division) (two operands)
     6/2 = 3     7/2 = 3
     6 % 2 = 0   7 %2 = 1