regarding recent loan deferment but the loan interest still accrued

i'm confused with the interest calculation.

my monthly installment is 2000. Outstanding balance still left 400k and another 34 years to go
assuming my interest rate is 3% after deducted BR

A) 2000 x (3%/365x180) = total interest extra
B) 400k x (3%/365x180) = total interest extra
C) ????........

any idea what is the calculation formula and roughly how many extra interest i have to pay ?

would like take the deferment ?

The formula is your total Loan Balance x 3% = Total Interests for 1 year
RM400,000 x 3% = RM12,000 / Year
RM1,000 per month.

I would say you have to pay around 6k interest total if you choose to take the deferment, so most likely you will have 406k outstanding after 6 months.

any idea what is the calculation formula and roughly how many extra interest i have to pay ?

Regardless you deferment of not, the interest still the same, 1k per month

interest 3%
prinicipal 400000
installment 2000

interest principal
april 986.30 400986.30
may 988.73 401975.03
june 991.17 402966.21
july 993.62 403959.82
august 996.07 404955.89
september 998.52 405954.41

your principal add ~6k after 6 months,