From ArsTechnica comes another coooooooooool report:

Google gets even cooler
Posted 08/25/2003 @ 4:44 PM, by Fred "zAmboni" Locklear

This is something new (for me at least). Jeppe sent in word that Google now has a calculator function. Type in the mathematical expression in the search bar (even works in the Google toolbar) and it will give you the answer. The new function can handle physical constants and unit conversions!

To use Google's built-in calculator function, simply enter the expression you'd like evaluated in the search box and hit the Enter key or click the Google Search button. The calculator can evaluate mathematical expressions involving basic arithmetic (5+2*2 or 2^20), more complicated math (sine(30 degrees) or e^(i pi)+1), units of measure and conversions (100 miles in kilometers or 160 pounds * 4000 feet in Calories), and physical constants (1 a.u./c or G*mass of earth/radius of earth^2). You can also experiment with other numbering systems, including hexadecimal and binary.