Samsung SCH-A530ZSVXAR - Manual (Page 75)

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•[x] Multiplication
•[÷] Division
5. Use the keypad to enter the second number into your calculator.
6. Press to perform the calculation and view the result, or continue to
calculate with the same operator, or change the operator and continue.
Every time you change the operator, the previous calculation is
performed and the result is displayed as the bottom number on the
display screen.
7. Press to perform the calculation and view the result.