On January 1, 2021, ABC Company purchased P600,000, a trademark with an estimated useful life of 16 years. In January 2025, ABC paid P90,000 for legal fees in a successful defense of the trademark. ABC recorded amortization expense for the year ended December 31, 2025, of P45,000. The amount of expense for the year 2025 is overstated or understated by how much?