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+
    Addition:  The value on the right is added to the value on the left.

_
    Subtraction:  The value on the right is subtracted from the value on the
    left.

*
    Multiplication:  The value on the left is multiplied by the value on the
    right.

/
    Division:  The value on the left is divided by the value on the right.

%
    Modulus:  The modulus of the value on the left with respect to the value
    on the right is produced.  The result is the remainder when the value on
    the left is divided by the value on the right.