The basic arithmetic operators in action : Operators « PL SQL Operators « Oracle PL/SQL Tutorial

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3. Operators

SQL>
SQL> SET ECHO ON
SQL> SET SERVEROUTPUT ON
SQL>
SQL> BEGIN
  2    DBMS_OUTPUT.PUT_LINE(4 * 2);  --multiplication
  3    DBMS_OUTPUT.PUT_LINE(24 / 3); --division
  4    DBMS_OUTPUT.PUT_LINE(4 + 4);  --addition
  5    DBMS_OUTPUT.PUT_LINE(16 - 8); --subtraction
  6  END;
  7  /
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PL/SQL procedure successfully completed.

SQL>
SQL>