In $2014,$ Homer was a salosperson and had an annual salary of $\$ 8,000 .$ He also carned $\$ 1,500 \mathrm{by}$ teaching japanose On January $1,2015,$ he quir his job, stopped teaching, and rented a storcfront to run a bookshop. He took $\$ 6,000$ from his savings account to buy bookshelves and other facilitics. During $2015,$ he paid $\$ 13,000$ toward rent and $\$ 7,500$ in salary to an cmployee he hired. He received a tocal revenue of $\$ 43,000$ from the bookshop and carned interest at 5 percent a year on his savings account balance. Normal profit is $\$ 52,000$ a year. Ar the cnd of $2015,$ John could have sold his bookchelves and other facilities for $\$ 2.800$. Calculate John's opportunity cost of production and his coonomic profit in 2015.