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numeric operators

(Oracle Express)

^ Exponentiation.
-,+ Unary minus and plus.
*, / Numeric multiplication or division. For division, the result is a double.
\ Integer division. The operands can be integer or long.
Mod Modulus or Remainder. The operands can be integer or long.
-, + Numeric addition and subtraction. The + operator can also be used for string concatenation.