Teaser 2008: Divide and add

From The Sunday Times, 11th March 2001 [link]

In the following arithmetic the fractions have four digits in the numerator and denominator, and the digits have been replaced consistently by letters. with different letters used for different digits.

ETON/NOTE + TANG/GNAT

Each fraction is a whole number.

What is the total?

[teaser2008]