Google search engine is a world's famous and most used web search engine. It provides many features and one of it is Google search engine calculator. For this just go to Google.com and search any calculation such as 7*5 , 3/3 , 5-2 , etc. For example click here.
Then you are able to see Google search engine calculator (see the image below). So use it and explore Google.
Click on image to view it correctly.