Answer:
 $360,308
Step-by-step explanation:
The computation of the total amount of interest revenue is shown below:
But before that we have to determine the annuity payment per year which is 
Annuity payment per year is 
= Fair value ÷ PVIFA for 10% for 5 years 
= $991,692 ÷ 5.868 
= $169,000
Now Total payments for eight years is 
= $169,000 × 8 
= $1,352,000
 So, the amount of interest revenue is 
= Total payments made for eight years - Fair value 
= $1,352,000 - $991,692 
= $360,308