Nokia 6150 - Manual (Page 64)

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5 Press Options . Highlight Equals and press OK. You can also
choose the Add , Subtract , Multiply , and Divide
functions from the list of options.
NOTE: This calculator has a limited accuracy and
rounding errors may occur, especially in long
divisions.
To Make a Currency Conversion
1 To set the exchange rate, press Options , scroll to Exchange
rate and press OK .
2 Scroll to either of the displayed options and press OK . Key in the
exchange rate (press for a decimal point) and press OK .
3 To make the conversion, key in the amount to be converted, press
Options , scroll to To domestic or To foreign and
press OK .