During 2014, Matsumura Corporation spent 170,000 in research costs. As a result, a new product called the New Age Piano was patented. The patent was obtained on October 1, 2014 and had a legal life of 20 years and a useful life of 10 years. Legal costs of 24,000 related to the patent were incurred as of October 1, 2014. (Amounts are in thousands.)

(a) Prepare all journal entries required in 2014 and 2015 as a result of the transactions above.

(b) On June 1, 2016, Matsumura spent 12,400 to successfully prosecute a patent infringement suit. As a result, the estimate of useful life was extended to 12 years from June 1, 2016. Prepare all journal entries required in 2016 and 2017.

(c) In 2018, Matsumura determined that a competitor's product would make the New Age Piano obsolete and the patent worthless by December 31, 2019. Prepare all journal entries

required in 2018and 2019.

I do not understand why in B for 2017 we had 32400 divided by 12 and not 32400-1575 divided by 12. Please explain this, I really get confused to record amortization expense, any explanation to help me understand amortization expense.