Up the ante for retirement fund via CPF-SA

Ever wonder how much difference can that additional 'paltry' 1.5% (2.5% for OA; 4% for SA) can make?

Try this calculator I created n please do let me know if any error has been spotted! 10u! ^_^

https://docs.google.com/spreadsheets/d/1mRa0SBSOi-u9co068tchICn4OR59hkmk7qq0dmaN8qU/edit?usp=sharing