LG MS770 - Manual (Page 144)

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Tools
Calculator
Allows you to perform simple mathematical calculations.
To open and use the Calculator
 From the Home screen, touch the Apps Key > Calculator .
 Enter numbers and arithmetic operators on the Basic panel.
 Drag the Basic panel to the left to open the Advanced panel.
 Touch and hold the Calculator’s display to open a Context menu where
you can copy what you’ve entered and access other tools.
 Touch the Delete Key to delete the last number or operator you
entered. Touch and hold the Delete Key to delete all of the entered
information.
 Touch the Menu Key to open an Options menu to clear your
calculation(s) history or change panels between Advanced and Basic.
 Touch to view your calculator history. You can touch an entry
to calculate it again or edit it.