The before-tax income for Kingbird Ca. for 2020 was $665,600 and $525,600 for 2021 . However, the axcountant noted that the following errors had been made: 1. The bookkeeper in recording interest income for both years on an investment in 4% bonds with a par value of $100,700 made the following entry for each year: Cash 4,028 Interest Income 4,028 The bonds were purchased at a discount of $8,100 on January 1,2020 , to yield an effective interest rate of 5%. (Assume that the effective-yield method should be used.) 2. Sales for 2021 included amounts of $66,100 which were delivered in 2020 and paid for in 2021. Title passed to the purchaser upon delivery. 3. Interest of $75,800 related to the construction of a manufacturing facility had been erroneously charged to the expense during 2020 instead of being capitalized as part of the facilitys cost. The facility was completed and occupied on January 1 , 2021. The company applies a rate of 5% to the balance in the building account at the end of the year in its determination of depreciation charges. 4. The inventory on December 31,2020 , was overstated by $17,200. Prepare a schedule showing the determination of corrected income before taxes for 2020 and 2021. (Enter negative amounts using either a negathesign preceding the number es, 15,000 or parentheses es. (15,0001)