Nokia N91 - Manual (Page 90)

Tools
89
Tools
Calculator
To add, subtract, multiply, divide, calculate square roots
and percentages, press
, and select Tools > Calculator .
Note: This calculator has limited accuracy and
is designed for simple calculations.
To save a number in the memory (indicated by M ), select
Options > Memory > Save . To retrieve a number in memory,
select Options > Memory > Recall . To clear a number in
memory, select Options > Memory > Clear .
Calculate percentages
1 Enter a number for which you want to calculate
a percentage.
2 Select , , , or .
3 Enter the percentage.
4 Select .
Converter
To convert measures such as Length from one unit ( Yards )
to another ( Meters ), press , and select Tools > Converter .
Note that Converter has limited accuracy, and rounding
errors may occur.
1 Scroll to the Type field, and press the joystick to open
a list of measures. Scroll to the measure you want to
use, and select
OK .
2 Scroll to the first Unit field, and press the joystick. Select
the unit from which you want to convert and OK . Scroll
to the next Unit field, and select the unit to which you
want to convert.
3 Scroll to the first Amount field, and enter the value you
want to convert. The other Amount field changes
automatically to show the converted value.
Press to add a decimal and for the +, - (for
temperature), and E (exponent) symbols.
Tip! To change the conversion order, enter the value
in the second
Amount field. The result is shown in
the first Amount field.