This is not how replacement rate is calculated. The common formula/approximation is inverse of product of probability of reaching mean fertility age and female

This is not how replacement rate is calculated. The common formula/approximation is inverse of product of probability of reaching mean fertility age and female ratio. The female ratio in India is 0.482. The other factor I have no idea. If it’s ~94% then 2.2 is the replacement rate. I think that’s fairly high provided we start at 96.8% but who knows.