I scroll them on reels and I don't save them, not sure how to share with you. You can google : save money on mortgage interest payment instagram (or tiktok) - all the angmohs will share like they make extra payment every month or quarter, HSA, property tax etc
One such link :
https://www.instagram.com/edwardcollins_upleveled/reel/CwnXs8Qvof0/
If you want a better explanation :
Don't think it works in SG because we can't do early repayment like them, plus the math don't add up if you try to do it in Singapore, like i shared before, likely its because of compound/simple interest - again i'm not really but if you do a side by side amortization with the same loan tenure, loan amount and interest between singapore's loan calculator and other countries, the payment amount is very different.