Can anyone help me through this one? It's a bit overwhelming.

Intermediate Accounting (8th Edition) Chapter 5 Problem 13 (P5-13) Pages 293 - 294.

(I could not direct link, so I took screenshots of the problem)

Problem Citation Builders, Inc., builds office buildings and single-family homes. The office buildings are constructed under contract with reputable buyers. The homes are constructed in developments ranging from 10-20 homes and are typically sold during construction or soon after. To secure the home upon completion, buyers must pay a deposit of 10% of the price of the home with the remaining balance due upon completion of the house and transfer of title. Failure to pay the full amount results in forfeiture of the down payment. Occasionally, homes remain unsold for as long as three months after construction. In these situations, sales price reductions are used to promote the sale During 2016, Citation began construction of an office building for Altamont Corporation. The total contract price is $20 million. Costs incurred, estimated costs to complete at year-end, billings, and cash collections for the life of the contract are as follows 2016 2017 2018 Costs incurred during the year $4,000,000 $9,500,000 $4,500,000 Estimated costs to complete as of year-end 12,000,000 4,500,000 Billings during the year 2,000,000 10,000,0008,000,000 Cash collections during the year 1,800,000 8,600,0009,600,000 Also during 2016, Citation began a development consisting of 12 identical homes. Citation estimated that each home will sell for $600,000, but individual sales prices are negotiated with buyers. Deposits were received for eight of the homes, three of which were completed during 2016 and paid for in full for $600,000 each by the buyers. The completed homes cost $450,000 each to construct. The construction costs incurred during 2016 for the nine uncompleted homes totaled $2,700,000