Animal, Inc. leased equipment from Zoo Enterprises under a 5-year lease requiring equal annual payments of $48,000, with the first payment due at lease inception. The lease does not transfer ownership, nor is there a bargain purchase option. The equipment has a 5-year useful life and no salvage value. Animal, Inc.'s incremental borrowing rate is 10% and the rate implicit in the lease (which is known by Pisa, Inc.) is 8%. Assuming that this lease is properly classified as a capital lease, what is the amount of interest expense recorded by Animal, Inc. in the first year of the asset's life?