"After paying for so many installments (1~3yrs), why I still own so much?"

The above tabulated a quick glance of a RM250,000 mortgage with 7.5% interest rate over 30 years of loan period. It illustrated how much a borrower paid to it installment, the portion to the interest, principal, loan balance amount and it percentage.
Hints: Don't be surprised, it is a standard, wisely used by all the banker around the globe.