LG Optimus User Manual page 88

Tool
88
Calculator
To open and use the Calculator
Touch Calculator
screen.
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 menu
where you can copy what you've entered and access other
tools.
Touch Clear to delete the last number or operator you
entered. Touch and hold Clear to delete all of the entered
information.
on the Home screen or in the Launch
Drag to switch
between the Basic
and Advanced panels.