A unit of the equal parts of the capital stock divided by a corporation is called a "share."
Here's a more detailed explanation:
1. Capital Stock: This refers to the total amount of money or other assets that shareholders have invested in a corporation, represented by shares.
2. Share: Each share represents a fraction of ownership in the corporation's capital stock. When a corporation issues shares, it allows investors to buy a portion of the company.
Thus, the correct answer is:
Share