Explanation:
The adjusting entry is as follows:
On December 31
Unearned revenue Dr $8,370
To Fees earned $8,370
(Being the unearned revenue is recorded)
The computation is shown below:
= Total 36 months subscription received amount ÷ Given months
= $33,480 ÷ 36 months
= $930
So, for nine months, it is
= $930 × 9 months
= $8,370