In 2020, Sheffield Construction Corp. began construction work under a 3-year contract. The contract price was $1,050,000. Sheffield uses the percentage-of-completion method for financial accounting purposes. The income to be recognized each year is based on the proportion of cost incurred to total estimated costs for completing the contract. The financial statement presentations relating to this contract at December 31, 2020, are shown below. Balance Sheet Accounts receivable $16,800 Construction in process $59,400 Less: Billings 63,200 Costs and recognized profit in excess of billings -3,800 Income Statement Income (before tax) on the contract recognized in 2020 $15,444 (a) How much cash was collected in 2020 on this contract? Portion of contract billings collected $ (b) What was the initial estimated total income before tax on this contract? Income before tax on this contract $