A person who has been managing a dry cleaning store for $30,000 per year decides to open her own dry cleaning store. The expenses are $35,000 for salaries (excluding the owner's), $10,000 for supplies, $8,000 for rent, $2,000 for utilities, and $5,000 for interest on a bank loan. The revenues of the store during the first year of operation are $100,000. The total economic profit is $ . (Only enter number; the $ sign has been provide for you.)