Use ENTER as the equal sign.
Use SPACE or AC to clear memory.
For example :
600 ÷ ( ÷ ) 25 = (ENTER) Display shows : 24
Next example : clear memory (AC or SPACE) 13 + ( + ) 11 = (ENTER)
Display shows : 24
continuing the example with the last result: x ( x ) 25 = (ENTER)
Display shows : 600
Press QUIT or MENU to return to the Main Screen.
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13