The total interest on this loan depends on your repayment method.
First: interest first, then principal. The annualized monthly interest rate of 4.9% is about 4%11400000.041= 574. This is your monthly interest, which is 574*60=34440 for 60 installments in 5 years. This is the total interest. Pay interest first every month, and return the principal in one lump sum after five years.
Second, with equal principal and interest, the annualized monthly interest rate of 4.9% is still about 4% 1. However, due to the monthly repayment of principal, the interest is correspondingly reduced, and the calculation formula is more complicated. I'll tell you the result directly, that is, 140000, the monthly payment of equal principal and interest for five years is 2635, and the total interest paid for five years is 18 133.