Assuming 4% inflation and 7% investment return, you should get c. RM1.2 mil by 40 yo, but that can only last you until c. 60 yo before you dried up you money.
Keep working until 45 yo then then you can extend that to 77 yo.

But mind you, 7% consistent investment return is not easy, and you need to factor in extra for medical expenses when you are old. Medical cost goes up for way more than 4% per annum.

5 minutes of Excel