Gratuity = Last monthly Wages x 15 x years of completed service
(i) Wages = Basic Wages + DA
(ii) Maximum gratuity payable = 10, 00,000/-
ie 34464 x 15 x 11 divided by 26 = 218714
So regarding Gratuity your calculation is correct.
Regarding the other benefits I will be able to reply if you could send me the Govt Order regarding voluntary retirement Scheme.
9th August 2012 From India, Kochi