How Do I Calculate My Monthly Pension After 29 Years of Service? Seeking Guidance

My first company, where I joined on 01.04.1998, and worked until 19.11.2011, up to my retirement on 07.01.2025. I transferred my PF amount to my second company. I would like to inform you that in my last company, my pensionable salary was 15K (for the last six years), and no NCP days will be calculated in my pension. Kindly provide me with an estimate of my monthly pension. My pensionable service should be 29 years, including 2 years of bonus.

Regards,
Tarak Shaw