Google is part is our life now. I can't imagine my life without google, these days especially.
"One of my friend is telling that most of the people opens google once just to check whether internet has connected or not". This itself is telling how our life dependent with the Google.
Though Google has lots of products, Search Engine is always the best.
Just a minute back I typed (12^5)*2 in Google search engine box just like that and I know that google displays the direct result like below.