How much should I invest for 15 years to get a monthly income of Rs 50,000 after retirement?

Assuming you live up to the age of 80, earn an inflation-adjusted pre-tax return of 1.88% a year and do not intend to bequeath, you will require a corpus of Rs 1.20 crore the day you retire.

from Wealth-Economic Times https://economictimes.indiatimes.com/wealth/invest/how-much-should-i-invest-for-15-years-to-get-a-monthly-income-of-rs-50000-after-retirement/articleshow/78228916.cms