Calculator – Samsung SWC-R640LBAXAR User Manual
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3.
Start the timer by tapping Start. The following options are 
available: 
• Tap Stop to pause or end the count.
• Tap Restart to resume the count.
• Tap Reset to erase the current count.
• Tap OK to silence the alert once the set time is expired.
Calculator
You can perform calculations, including addition, subtraction, 
multiplication, and division using your phone. 
1.
In Standby mode, tap Menu
➔
Tools
➔
Calculator. The
Calculator keypad screen displays.
2.
Enter the first number in your calculation using the touch 
screen keypad (numbers can be up to 15 digits long, with up to 
10 of thos digits after a decimal point).
• Tap +/- to toggle the sign of a number between positive and negative.
• Tap ( ) before and after parts of the calculation you want to perform first
to “nest” calculations within a calculation.
3.
Tap the appropriate calculation operator (
/
, X, -, +) to set the
type of calculation you want to perform (division, multiplication, 
subtraction, or addition).
4.
Enter the next number in your calculation using the touch 
screen keypad. 
5.
Tap = to perform the calculation and view the result.