Each of the following independent events requires a year-end adjusting entry. Show how each event and its related adjusting entry affect the accounting equation. Assume a December 31 closing date. The first event is recorded as an example.(Do not round intermediate calculations & Round your final answer to nearest whole dollar.)

1. Paid $6,600 cash in advance on October 1 for a one-year insurance policy.
2. Received an $5,400 cash advance for a contract to provide services in the future. The contract required a one-year commitment, starting April 1.
3. Purchased $2,100of supplies on account. At year's end, $265of supplies remained on hand.
4. Paid $11,760cash in advance on August 1 for a one-year lease on office space.