I am stuck on year 2018 and 2019 using the percentage completion method. Please show calculations.

*P18-11 (L05,6,7) EXCEL (Long-Term Contract with an Overall Loss) On July 1, 2017, Torvill Construction Company Inc. contracted to build an office building for Gumbel Corp. for a total contract price of $1,900,000. On July 1, Torvill estimated that it would take between 2 and 3 years to complete the building. On December 31, 2019, the building was deemed substantially completed. Following are accumulated contract costs incurred, estimated costs to complete the contract, and accumulated bill- ings to Gumbel for 2017, 2018, and 2019. At 12/31/17 At 12/31/18 At 12/31/19 Contract costs incurred to date $ 300,000 $1,200,000 $2,100,000 Estimated costs to complete the contract 1,200,000 800,000 Billings to Gumbel 300,000 1,100,000 1,850,000 Instructions (a) Using the percentage-of-completion method, prepare schedules to compute the profit or loss to be recognized as a result of this contract for the years ended December 31, 2017, 2018, and 2019. (Ignore income taxes.) (b) Using the completed-contract method, prepare schedules to compute the profit or loss to be recognized as a result of this contract for the years ended December 31, 2017, 2018, and 2019. (Ignore income taxes.) -0