Seems like Richard tried to crack a joke.
But perhaps he has hit the bulls eye.................
Why dont you implement a webrequest in your form and try hitting the google's url with the written equation passed as parameter to q of the google's get request ;)
http://www.google.co.in/search?
q=25%2B85&sourceid=opera&ie=utf-8&oe=utf-8&channel=suggest
And parse the output to the answer box..............
which for me came in following table
| | 25 + 85 = 110 |