Answer:
Bonds were issued at 636,338.5473 
journal entries:
cash 636,339
discount on bonds 23,661
 bonds payable 660,000
--to record issuance--
interest expense 15908 
 discount on bonds 2708
 cash 13200
--to record first payment--
the attached image isthe amortization schedule
Step-by-step explanation:
we will first calculate the present value of the cuopon payment and maturity at the market rate:
 
C 13,200
time 8
rate 0.025
 
PV $94,645.8106 
 
 
 
 Maturity 660,000.00 
 time 8.00 
 rate 0.025
 
 
 PV 541,692.74 
 
PV c $94,645.8106 
PV m $541,692.7367 
Total $636,338.5473 
method on effective rate:
carrying value x market rate = interest expense
bonds face value x bond rate = cash procceds
difference: amortization
the amortization as this is discount will increase the carrying value of the bond after each payment