Simple Corporation has the following assets, liabilities, and equity accounts: Book value Market value Cash $4,200 $4,200 Accounts receivable $7,800 $7,600 Inventory $22,000 $28,000 Equipment $190,000 $172,200 Accounts payable $12,000 $12,000 Notes payable $140,000 $140,000 Common stock, 4,000 shares issued and outstanding $25,000 Retained earnings $47,000 What is the book value of a share of Simple stock?