Google calculator

Hey, this is not a joke. Google search box can act as a handy calculator. What more, it works as if a library of common SI units and metric conversions is available. Try :

sqrt(32768)*7^4
radius of earth= ? km
120 lbs =? kg
speed of light x 3
17 degree C= ? degree F

Surprise of the results. Many more interesting calculations can be performed so long as you use your imagination.

How come Google has the splendid idea of making the web search engine capable as a desktop calculator ?