Sheffield Corp. had record sales in 2020. It began 2020 with an Accounts Receivable balance of $500,000 and an Allowance for Doubtful Accounts of $35,000. Sheffield recognized credit sales during the year of $6,705,000 and made monthly adjusting entries equal to 0.5% of each months credit sales to recognize bad debt expense. Also during the year, the company wrote off $35,300 of accounts that were deemed to be uncollectible, although one customer whose $4,700 account had been written off surprised management by paying the amount in full in late September. Including this surprise receipt, $6,538,000 cash was collected on account in 2020. To assess the reasonableness of the allowance for doubtful accounts, the controller prepared the following aged listing of the receivables at December 31, 2020: Days Account Outstanding | | Amount | | Probability of Collection | Less than 16 days | | $353,200 | | 97% | Between 16 and 30 days | | 124,000 | | 91% | Between 31 and 45 days | | 76,000 | | 80% | Between 46 and 60 days | | 38,800 | | 71% | Between 61 and 75 days | | 19,800 | | 51% | Over 75 days | | 24,600 | | 0% | | | $636,400 | | | | | | |