Please offer an explanation and step by step process. There are 5 parts but I cannot post them all

At the beginning of the year, Lavish Advertising owed customers $2,400 for unearned revenue collected in advance During the year, Lavish received advance cash receipts of $7,800 and earned $25,000 of service revenue (exclusive of any amount earned from advance payments). At year-end, the liability for unearned revenue is $2,800 and unadjusted service revenue is $25,000 Read the requirements Requirement 1. Record the adjusting entry assuming that Lavish records the cash receipt of unearned revenue by initially crediting a liability account. Post the adjusting entry to the Unearned Revenue and Service Revenue T-accounts. Make sure to include the beginning balance and additional unearned revenue in the Unearned Revenue T-account. Begin by recording the adjusting entry assuming that Lavish records unearned revenue by initially crediting a liability account (Record debits first, then credits. Select the explanation on the last line of the journal entry. ) Date Accounts and Explanation Debit Credit