Did you know that you can use Google as a calculator to do all sorts of sums and conversions?  To use it you simply enter the calculation you'd like done into the search box and press the Enter key.  Use an asterisk for multiplication and a forward slash for division.

The calculator can do basic arithmetic (365*84, for example), more complicated maths using sines, cosines and the like, calculate units of measurement and conversions, physical constants and Roman Numerals.  For example, try one or two of these in the Google search box:

15 Stones in pounds
25 degrees C in F
70 mph in kph
2007 in roman numerals

It will even do currencies (try $14 in £) with rates taken from Citibank.  Amazing.
For detailed instuctions, click here.

____________________________________________________________________________________