Recently, I found out about this accidentally when I was chatting with my friend. He presented me with the formula 500 * (10^3/2^10)^3. I was too lazy to take my scientific calculator or typed in windows calculator. So, I reluctantly pasted this formula in my google chrome bar and press enter..and..bravo..the result was presented in my browser.
This is a feature from Google called Google Calculator. Apparently, more complex mathematical problem such as sine, cosine can also be solved here. More about Google Calculator features can be seen here.