As a senior accountant at Saudi Telecom Company (STC), prepare a ledger for the month of October 2023, recording all transactions related to accounts payable, accounts receivable, and general expenses. Utilize the following transaction data:

• October 1: Received invoice from supplier for SAR 90,000, due in 30 days.
• October 5: Billed customer for services provided, SAR 40,000.
• October 10: Paid utility bill, SAR 20,000.
• October 15: Received payment from customer, SAR 35,000.
• October 20: Purchased office supplies on credit, SAR 18,000.
• October 25: Paid salary expenses, SAR 25,000.

Ensure proper classification and organization of accounts, including dates, descriptions, and amounts.