Bob's Hats is an unincorporated business. During 2020, its first year of operations, the business has cash sales of $123,000. It also has account sales of $46,000, of which $22,000 remains uncollected at the end of 2020. It is estimated that $4,000 of these accounts will be uncollectible. Of the cash amounts received, $9,500 is for merchandise that will be delivered in 2021. By what amount will the 2020 net business income of Bob's Hats be increased by the preceding information?