Can some please explain. I don't know how to get to the answer and why is it understated

Multiple Choice Question 65 Your answer is correct. Blossom Co. purchased machinery that cost $2350000 on January 4, 2016. The entire cost was recorded as an expense. The machinery has a 9-year life and a 135000 residual value. The error was discovered on December 20, 2018. Ignore income tax considerations. Before the correction was made, and before the books were closed on December 31, 2018, retained earnings was understated by $2350000 $1857778. $1827778. $1683889. Click if you would like to Show Work for this question: Open Show Work