1) MapleLeaf company find the owing servce $18,000 in the unearned revenue has been provided during the September

2) In the beginning of the September, there was $200 in the office supplies account. The company purchased another $700 office supples in the Septermber. After the whole month, now only $150 office supplies left over there.

3) Business paid $3000 in advance for three month rent in the beginning of the September. Now it has been one month.

4) On Sep1, the business bought a computer server for 28,000, estimated useful life is 5 years. The residue value is $4000

5) Business has the record showing the previous month owing for salary $3200. And during September, business also has the salary $3000, which has not been recorded and paid yet. Please pay them together

6) Business did not receive the utility bill for September. So, the utility provider send over electricity bill $450 for September.

7) Sept1, 2020 business bought one copier machine for $36,000. The estimated useful life is 5 years with no residue value.

Please record the September month-end adjusting entries for the above transactions. If there is a calculation involved, please show me the calculation details.